SlideShare ist ein Scribd-Unternehmen logo
1 von 30
Downloaden Sie, um offline zu lesen
KS3 Chemistry 7F Simple Chemical Reactions
Contents 7F Simple Chemical Reactions Word equations   Reactions with oxygen Chemical reactions everywhere Summary activities Reactions with acid
Physical and chemical changes How many physical and chemical changes can you spot?
What is a chemical reaction? Can you think of any other chemical reactions? Chemical reactions do not only happen in the laboratory.  Chemical reactions happen  anywhere  that  new substances  are made: cooking rusting sticking burning making metals living!
Useful chemical reactions
Non-useful chemical reactions
Reactants and products The starting substances used in a reaction are  reactants . The  new  substances formed in a reaction are  products .   reactants In   a   chemical   reaction,   one   or   more   new   substances   are   formed. The arrow means “ change into ”. In a chemical reaction,  all the reactants  change into  the products. It is difficult to reverse a chemical reaction and change the products back into the reactants. products
More about chemical changes Chemical changes are usually difficult to reverse.   Magnesium burns in oxygen to form magnesium oxide. It is not possible to “un-burn” the magnesium once it has been burnt. Many reactions need energy to get them started.  Many reactions (like the burning of magnesium) give out  heat energy  once the reaction has started.  Heat energy  being given out is one sign of a chemical reaction. What other signs of a chemical reaction are there?  magnesium oxide oxygen magnesium
Contents 7F Simple Chemical Reactions Word equations   Reactions with oxygen Chemical reactions everywhere Summary activities Reactions with acid
Reaction of acid with metals
Test for hydrogen magnesium + acid hydrogen burning splint Many metals react with acids. When this happens the metal fizzes as bubbles are produced. What do the bubbles mean? A  gas  is produced. How can you test to find out if the gas produced is hydrogen? Place a  burning splint  next to the mouth of test tube.  A  ‘squeaky pop’  as the gas ignites shows that  hydrogen  is the gas produced in this reaction.
Reaction of acid with a metal carbonate
Test for carbon dioxide When a metal carbonate reacts with acid it fizzes and then seems to disappear.  The carbonate and the acid have reacted and changed into  a salt ,  water  and  carbon dioxide . When carbon dioxide gas is bubbled through limewater, it turns the limewater  cloudy  or  milky white . Carbon dioxide can be tested for using the  limewater test. a salt metal  carbonate acid water carbon dioxide
Contents 7F Simple Chemical Reactions Word equations   Reactions with oxygen Contents Chemical reactions everywhere Summary activities Reactions with acid
Word equations 3. The names of the products. A  word equation  is used as a quick, shorthand way of writing a chemical reaction. There are always three parts to a word equation: 1.   The names of the reactants. 2. An arrow. reactants products What is the word equation for hydrogen reacting with oxygen to form water? water oxygen hydrogen
Reactant or product?  product reactant reactant product magnesium oxide magnesium copper oxide copper In this chemical reaction ,  which substances are the reactants and which substances are products? Substance Reactant or Product? magnesium oxide magnesium copper oxide copper
[object Object],Write the word equations 2.  Calcium hydroxide reacts with hydrochloric acid to form calcium chloride and water. 3.  Sodium reacts with hydrochloric acid to form sodium chloride and hydrogen.   magnesium oxide oxygen calcium chloride calcium  hydroxide hydrochloric acid water 1.  Magnesium burns brightly in oxygen to form magnesium oxide. magnesium sodium chloride sodium hydrochloric acid hydrogen
Contents 7F Simple Chemical Reactions Word equations   Reactions with oxygen Contents Chemical reactions everywhere Summary activities Reactions with acid
What is combustion? Combustion  is the scientific word for  burning  and is a type of chemical reaction. Combustion is the reaction when a substance burns and  reacts with oxygen  to produce heat and light energy.
Using combustion Burning has been an important source of energy since primitive man and  is still a hugely important process today. How different would life be without combustion? Burning fuel, like coal, petrol and natural gas, provides > 90% of the energy needed for transport, factories and in the home.
Fire triangle
Equations for combustion 3.   Methane  burns and forms carbon dioxide and water: 1.   Coal  (made from carbon) burns and forms carbon dioxide: When substance burns and react with oxygen the new substances formed are called “ oxides ”. What are the word equations for these combustion reactions? 2.   Hydrogen  burns and forms dihydrogen oxide (i.e water!): carbon dioxide oxygen carbon water oxygen hydrogen carbon dioxide oxygen methane water
Combustion of methane The natural gas,  methane , is often burnt for cooking. Methane is made up of carbon and hydrogen. ,[object Object],oxygen ,[object Object],carbon dioxide ,[object Object],water ,[object Object],carbon dioxide oxygen methane water
Candle burning in bell jar
Contents 7F Simple Chemical Reactions Acid reactions   Reactions with oxygen Contents Chemical reactions everywhere Summary activities Reactions with acid
Glossary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Anagrams
Quiz: useful reactions or not?
Chemical reactions summary
Multiple-choice quiz

Weitere ähnliche Inhalte

Was ist angesagt?

Reactivity and the_reactions_of_metals
Reactivity and the_reactions_of_metalsReactivity and the_reactions_of_metals
Reactivity and the_reactions_of_metalsMei Wong
 
Acids and alkalis
Acids and alkalisAcids and alkalis
Acids and alkalisammz1
 
9 h using chemistry
9 h using chemistry9 h using chemistry
9 h using chemistrycartlidge
 
8 e atoms & elements (boardworks)
8 e atoms & elements (boardworks)8 e atoms & elements (boardworks)
8 e atoms & elements (boardworks)cartlidge
 
9 e reactions of metals & metal cmpds
9 e reactions of metals & metal cmpds9 e reactions of metals & metal cmpds
9 e reactions of metals & metal cmpdscartlidge
 
PPT for Reaction of metals with acid
PPT for Reaction of metals with acidPPT for Reaction of metals with acid
PPT for Reaction of metals with acidAakankshaYaduvanshi
 
Mr Exham IGCSE - Respiration
Mr Exham IGCSE  - RespirationMr Exham IGCSE  - Respiration
Mr Exham IGCSE - Respirationmrexham
 
Intro to balancing chemical reactions
Intro to balancing chemical reactionsIntro to balancing chemical reactions
Intro to balancing chemical reactionsMariana Serrato
 
Ks4 movement in and out of cells
Ks4 movement in and out of cellsKs4 movement in and out of cells
Ks4 movement in and out of cellsSUSAN MATHEW
 
Reactions of acids
Reactions of acidsReactions of acids
Reactions of acidsbaha696969
 
8 f compounds & mixtures (boardworks)
8 f compounds & mixtures (boardworks)8 f compounds & mixtures (boardworks)
8 f compounds & mixtures (boardworks)Preeti Ghosh
 
Exothermic and Endothermic Reactions.ppt
Exothermic and Endothermic Reactions.pptExothermic and Endothermic Reactions.ppt
Exothermic and Endothermic Reactions.pptSamRugumamu
 
Movement in and out of cells
Movement in and out of cellsMovement in and out of cells
Movement in and out of cellsGreg Scrivin
 
7 l the solar system & beyond (boardworks)
7 l the solar system & beyond (boardworks)7 l the solar system & beyond (boardworks)
7 l the solar system & beyond (boardworks)cartlidge
 
8 k light (boardworks)
8 k light (boardworks)8 k light (boardworks)
8 k light (boardworks)cartlidge
 

Was ist angesagt? (20)

Reactivity and the_reactions_of_metals
Reactivity and the_reactions_of_metalsReactivity and the_reactions_of_metals
Reactivity and the_reactions_of_metals
 
Acids and alkalis
Acids and alkalisAcids and alkalis
Acids and alkalis
 
3.2 Solubility
3.2 Solubility 3.2 Solubility
3.2 Solubility
 
9 h using chemistry
9 h using chemistry9 h using chemistry
9 h using chemistry
 
8 e atoms & elements (boardworks)
8 e atoms & elements (boardworks)8 e atoms & elements (boardworks)
8 e atoms & elements (boardworks)
 
9 e reactions of metals & metal cmpds
9 e reactions of metals & metal cmpds9 e reactions of metals & metal cmpds
9 e reactions of metals & metal cmpds
 
PPT for Reaction of metals with acid
PPT for Reaction of metals with acidPPT for Reaction of metals with acid
PPT for Reaction of metals with acid
 
Mr Exham IGCSE - Respiration
Mr Exham IGCSE  - RespirationMr Exham IGCSE  - Respiration
Mr Exham IGCSE - Respiration
 
Intro to balancing chemical reactions
Intro to balancing chemical reactionsIntro to balancing chemical reactions
Intro to balancing chemical reactions
 
Ks4 movement in and out of cells
Ks4 movement in and out of cellsKs4 movement in and out of cells
Ks4 movement in and out of cells
 
Reactions of acids
Reactions of acidsReactions of acids
Reactions of acids
 
8 f compounds & mixtures (boardworks)
8 f compounds & mixtures (boardworks)8 f compounds & mixtures (boardworks)
8 f compounds & mixtures (boardworks)
 
Exothermic and Endothermic Reactions.ppt
Exothermic and Endothermic Reactions.pptExothermic and Endothermic Reactions.ppt
Exothermic and Endothermic Reactions.ppt
 
Movement in and out of cells
Movement in and out of cellsMovement in and out of cells
Movement in and out of cells
 
Salt preparation
Salt preparation Salt preparation
Salt preparation
 
7 l the solar system & beyond (boardworks)
7 l the solar system & beyond (boardworks)7 l the solar system & beyond (boardworks)
7 l the solar system & beyond (boardworks)
 
8 k light (boardworks)
8 k light (boardworks)8 k light (boardworks)
8 k light (boardworks)
 
Reaction of metals with water
Reaction of metals with water Reaction of metals with water
Reaction of metals with water
 
Chemical reactions
Chemical reactionsChemical reactions
Chemical reactions
 
26. covalent bonding
26. covalent bonding26. covalent bonding
26. covalent bonding
 

Andere mochten auch

Solids, liquids and gases
Solids, liquids and gasesSolids, liquids and gases
Solids, liquids and gasesKesh Dewan
 
Acids and alkalis
Acids and alkalisAcids and alkalis
Acids and alkalisex-test
 
Ks4 quantitative chemistry (boardworks)
Ks4 quantitative chemistry (boardworks)Ks4 quantitative chemistry (boardworks)
Ks4 quantitative chemistry (boardworks)cartlidge
 
C4 syllabus statements
C4 syllabus statementsC4 syllabus statements
C4 syllabus statementscartlidge
 
7 h solutions (boardworks)
7 h solutions (boardworks)7 h solutions (boardworks)
7 h solutions (boardworks)cartlidge
 
C10 syllabus statements
C10 syllabus statementsC10 syllabus statements
C10 syllabus statementscartlidge
 
Rate of reaction chemical kinetics (condensed)
Rate of reaction chemical kinetics (condensed)Rate of reaction chemical kinetics (condensed)
Rate of reaction chemical kinetics (condensed)jslayer
 
Energy change during chemical rcts
Energy change during chemical rctsEnergy change during chemical rcts
Energy change during chemical rctscartlidge
 
C7 syllabus statements
C7 syllabus statementsC7 syllabus statements
C7 syllabus statementscartlidge
 
7 i energy resources (boardworks)
7 i energy resources (boardworks)7 i energy resources (boardworks)
7 i energy resources (boardworks)cartlidge
 
C19 metals and their reactivity
C19 metals and their reactivityC19 metals and their reactivity
C19 metals and their reactivityChemrcwss
 
Reactivity with metals
Reactivity with metalsReactivity with metals
Reactivity with metalsyeshasv13
 
7 j electrical circuits (boardworks)
7 j electrical circuits (boardworks)7 j electrical circuits (boardworks)
7 j electrical circuits (boardworks)cartlidge
 
Rocks and weathering
Rocks and weatheringRocks and weathering
Rocks and weatheringbaha696969
 
C3 syllabus statements
C3 syllabus statementsC3 syllabus statements
C3 syllabus statementscartlidge
 
Limiting reactants
Limiting reactantsLimiting reactants
Limiting reactantscartlidge
 
7 k forces and their effects (boardworks)
7 k forces and their effects (boardworks)7 k forces and their effects (boardworks)
7 k forces and their effects (boardworks)cartlidge
 

Andere mochten auch (20)

Reactions & Formulas
Reactions & FormulasReactions & Formulas
Reactions & Formulas
 
Solids, liquids and gases
Solids, liquids and gasesSolids, liquids and gases
Solids, liquids and gases
 
Acids and alkalis
Acids and alkalisAcids and alkalis
Acids and alkalis
 
Ks4 quantitative chemistry (boardworks)
Ks4 quantitative chemistry (boardworks)Ks4 quantitative chemistry (boardworks)
Ks4 quantitative chemistry (boardworks)
 
C4 syllabus statements
C4 syllabus statementsC4 syllabus statements
C4 syllabus statements
 
7 h solutions (boardworks)
7 h solutions (boardworks)7 h solutions (boardworks)
7 h solutions (boardworks)
 
Chemical reactions
Chemical reactionsChemical reactions
Chemical reactions
 
C10 syllabus statements
C10 syllabus statementsC10 syllabus statements
C10 syllabus statements
 
Rate of reaction chemical kinetics (condensed)
Rate of reaction chemical kinetics (condensed)Rate of reaction chemical kinetics (condensed)
Rate of reaction chemical kinetics (condensed)
 
Metals
MetalsMetals
Metals
 
Energy change during chemical rcts
Energy change during chemical rctsEnergy change during chemical rcts
Energy change during chemical rcts
 
C7 syllabus statements
C7 syllabus statementsC7 syllabus statements
C7 syllabus statements
 
7 i energy resources (boardworks)
7 i energy resources (boardworks)7 i energy resources (boardworks)
7 i energy resources (boardworks)
 
C19 metals and their reactivity
C19 metals and their reactivityC19 metals and their reactivity
C19 metals and their reactivity
 
Reactivity with metals
Reactivity with metalsReactivity with metals
Reactivity with metals
 
7 j electrical circuits (boardworks)
7 j electrical circuits (boardworks)7 j electrical circuits (boardworks)
7 j electrical circuits (boardworks)
 
Rocks and weathering
Rocks and weatheringRocks and weathering
Rocks and weathering
 
C3 syllabus statements
C3 syllabus statementsC3 syllabus statements
C3 syllabus statements
 
Limiting reactants
Limiting reactantsLimiting reactants
Limiting reactants
 
7 k forces and their effects (boardworks)
7 k forces and their effects (boardworks)7 k forces and their effects (boardworks)
7 k forces and their effects (boardworks)
 

Ähnlich wie simple chemical reactions - chemistry

Chemical Reactions
Chemical ReactionsChemical Reactions
Chemical Reactionsamr hassaan
 
Specific Heat Of Calorimeter Lab Report
Specific Heat Of Calorimeter Lab ReportSpecific Heat Of Calorimeter Lab Report
Specific Heat Of Calorimeter Lab ReportElizabeth Anderson
 
Chapter 1 class 10.pptx
Chapter 1 class 10.pptxChapter 1 class 10.pptx
Chapter 1 class 10.pptxTincymolck
 
Class10 science-notes-chapter1
Class10 science-notes-chapter1Class10 science-notes-chapter1
Class10 science-notes-chapter1Aman J Khan
 
Chemical reaction and equations
Chemical reaction and equationsChemical reaction and equations
Chemical reaction and equationsAnkit Saraswat
 
February 25
February 25February 25
February 25j_lee317
 
Chapt 4 chemical reactions stoichiometry
Chapt 4 chemical reactions stoichiometryChapt 4 chemical reactions stoichiometry
Chapt 4 chemical reactions stoichiometryletisoles
 
Chapter 1 class 10.pptx
Chapter 1 class 10.pptxChapter 1 class 10.pptx
Chapter 1 class 10.pptxTincymolck
 
Types of Chemical Reactions
Types of Chemical ReactionsTypes of Chemical Reactions
Types of Chemical ReactionsRAJEEVBAYAN1
 
Chapter 1 class 10 (2).pdf
Chapter 1 class 10 (2).pdfChapter 1 class 10 (2).pdf
Chapter 1 class 10 (2).pdfTincymolck
 
Class 10 chemical reactions and equations
Class 10 chemical reactions and equationsClass 10 chemical reactions and equations
Class 10 chemical reactions and equationssarunkumar31
 
8.1 Simple Chemical Reactions.pptx
8.1 Simple Chemical Reactions.pptx8.1 Simple Chemical Reactions.pptx
8.1 Simple Chemical Reactions.pptxHENINGWIIDA
 
Reactions And Mixtures
Reactions And MixturesReactions And Mixtures
Reactions And Mixturesamr hassaan
 
Chem9 chapt 4 chemical_reactions_stoichiometry
Chem9 chapt 4 chemical_reactions_stoichiometryChem9 chapt 4 chemical_reactions_stoichiometry
Chem9 chapt 4 chemical_reactions_stoichiometryletisoles
 
What Are The Factors That Affect The Rate Of Reaction
What Are The Factors That Affect The Rate Of ReactionWhat Are The Factors That Affect The Rate Of Reaction
What Are The Factors That Affect The Rate Of ReactionSusan Anderson
 
Chemical reaction and equation class 10 chapter 1
Chemical reaction and equation class 10 chapter 1Chemical reaction and equation class 10 chapter 1
Chemical reaction and equation class 10 chapter 1prajapatiAditya
 
ncert class 10 answer chapter 1
ncert class 10 answer chapter 1ncert class 10 answer chapter 1
ncert class 10 answer chapter 1suneelKUMAR259
 
Chemical reactions and equations class 10 CBSE
Chemical reactions and equations class 10 CBSEChemical reactions and equations class 10 CBSE
Chemical reactions and equations class 10 CBSEritik
 

Ähnlich wie simple chemical reactions - chemistry (20)

Chemical Reactions
Chemical ReactionsChemical Reactions
Chemical Reactions
 
Chemical reactions
Chemical reactionsChemical reactions
Chemical reactions
 
Reaction types
Reaction typesReaction types
Reaction types
 
Specific Heat Of Calorimeter Lab Report
Specific Heat Of Calorimeter Lab ReportSpecific Heat Of Calorimeter Lab Report
Specific Heat Of Calorimeter Lab Report
 
Chapter 1 class 10.pptx
Chapter 1 class 10.pptxChapter 1 class 10.pptx
Chapter 1 class 10.pptx
 
Class10 science-notes-chapter1
Class10 science-notes-chapter1Class10 science-notes-chapter1
Class10 science-notes-chapter1
 
Chemical reaction and equations
Chemical reaction and equationsChemical reaction and equations
Chemical reaction and equations
 
February 25
February 25February 25
February 25
 
Chapt 4 chemical reactions stoichiometry
Chapt 4 chemical reactions stoichiometryChapt 4 chemical reactions stoichiometry
Chapt 4 chemical reactions stoichiometry
 
Chapter 1 class 10.pptx
Chapter 1 class 10.pptxChapter 1 class 10.pptx
Chapter 1 class 10.pptx
 
Types of Chemical Reactions
Types of Chemical ReactionsTypes of Chemical Reactions
Types of Chemical Reactions
 
Chapter 1 class 10 (2).pdf
Chapter 1 class 10 (2).pdfChapter 1 class 10 (2).pdf
Chapter 1 class 10 (2).pdf
 
Class 10 chemical reactions and equations
Class 10 chemical reactions and equationsClass 10 chemical reactions and equations
Class 10 chemical reactions and equations
 
8.1 Simple Chemical Reactions.pptx
8.1 Simple Chemical Reactions.pptx8.1 Simple Chemical Reactions.pptx
8.1 Simple Chemical Reactions.pptx
 
Reactions And Mixtures
Reactions And MixturesReactions And Mixtures
Reactions And Mixtures
 
Chem9 chapt 4 chemical_reactions_stoichiometry
Chem9 chapt 4 chemical_reactions_stoichiometryChem9 chapt 4 chemical_reactions_stoichiometry
Chem9 chapt 4 chemical_reactions_stoichiometry
 
What Are The Factors That Affect The Rate Of Reaction
What Are The Factors That Affect The Rate Of ReactionWhat Are The Factors That Affect The Rate Of Reaction
What Are The Factors That Affect The Rate Of Reaction
 
Chemical reaction and equation class 10 chapter 1
Chemical reaction and equation class 10 chapter 1Chemical reaction and equation class 10 chapter 1
Chemical reaction and equation class 10 chapter 1
 
ncert class 10 answer chapter 1
ncert class 10 answer chapter 1ncert class 10 answer chapter 1
ncert class 10 answer chapter 1
 
Chemical reactions and equations class 10 CBSE
Chemical reactions and equations class 10 CBSEChemical reactions and equations class 10 CBSE
Chemical reactions and equations class 10 CBSE
 

Kürzlich hochgeladen

Presentation on the Basics of Writing. Writing a Paragraph
Presentation on the Basics of Writing. Writing a ParagraphPresentation on the Basics of Writing. Writing a Paragraph
Presentation on the Basics of Writing. Writing a ParagraphNetziValdelomar1
 
CAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxCAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxSaurabhParmar42
 
Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.raviapr7
 
The basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxThe basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxheathfieldcps1
 
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRADUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRATanmoy Mishra
 
UKCGE Parental Leave Discussion March 2024
UKCGE Parental Leave Discussion March 2024UKCGE Parental Leave Discussion March 2024
UKCGE Parental Leave Discussion March 2024UKCGE
 
CapTechU Doctoral Presentation -March 2024 slides.pptx
CapTechU Doctoral Presentation -March 2024 slides.pptxCapTechU Doctoral Presentation -March 2024 slides.pptx
CapTechU Doctoral Presentation -March 2024 slides.pptxCapitolTechU
 
General views of Histopathology and step
General views of Histopathology and stepGeneral views of Histopathology and step
General views of Histopathology and stepobaje godwin sunday
 
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxPISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxEduSkills OECD
 
3.21.24 The Origins of Black Power.pptx
3.21.24  The Origins of Black Power.pptx3.21.24  The Origins of Black Power.pptx
3.21.24 The Origins of Black Power.pptxmary850239
 
Quality Assurance_GOOD LABORATORY PRACTICE
Quality Assurance_GOOD LABORATORY PRACTICEQuality Assurance_GOOD LABORATORY PRACTICE
Quality Assurance_GOOD LABORATORY PRACTICESayali Powar
 
The Singapore Teaching Practice document
The Singapore Teaching Practice documentThe Singapore Teaching Practice document
The Singapore Teaching Practice documentXsasf Sfdfasd
 
Practical Research 1 Lesson 9 Scope and delimitation.pptx
Practical Research 1 Lesson 9 Scope and delimitation.pptxPractical Research 1 Lesson 9 Scope and delimitation.pptx
Practical Research 1 Lesson 9 Scope and delimitation.pptxKatherine Villaluna
 
How to Add a New Field in Existing Kanban View in Odoo 17
How to Add a New Field in Existing Kanban View in Odoo 17How to Add a New Field in Existing Kanban View in Odoo 17
How to Add a New Field in Existing Kanban View in Odoo 17Celine George
 
5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...CaraSkikne1
 
HED Office Sohayok Exam Question Solution 2023.pdf
HED Office Sohayok Exam Question Solution 2023.pdfHED Office Sohayok Exam Question Solution 2023.pdf
HED Office Sohayok Exam Question Solution 2023.pdfMohonDas
 
Philosophy of Education and Educational Philosophy
Philosophy of Education  and Educational PhilosophyPhilosophy of Education  and Educational Philosophy
Philosophy of Education and Educational PhilosophyShuvankar Madhu
 
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptxSandy Millin
 
Benefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationBenefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationMJDuyan
 

Kürzlich hochgeladen (20)

Personal Resilience in Project Management 2 - TV Edit 1a.pdf
Personal Resilience in Project Management 2 - TV Edit 1a.pdfPersonal Resilience in Project Management 2 - TV Edit 1a.pdf
Personal Resilience in Project Management 2 - TV Edit 1a.pdf
 
Presentation on the Basics of Writing. Writing a Paragraph
Presentation on the Basics of Writing. Writing a ParagraphPresentation on the Basics of Writing. Writing a Paragraph
Presentation on the Basics of Writing. Writing a Paragraph
 
CAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptxCAULIFLOWER BREEDING 1 Parmar pptx
CAULIFLOWER BREEDING 1 Parmar pptx
 
Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.Drug Information Services- DIC and Sources.
Drug Information Services- DIC and Sources.
 
The basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptxThe basics of sentences session 10pptx.pptx
The basics of sentences session 10pptx.pptx
 
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRADUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
DUST OF SNOW_BY ROBERT FROST_EDITED BY_ TANMOY MISHRA
 
UKCGE Parental Leave Discussion March 2024
UKCGE Parental Leave Discussion March 2024UKCGE Parental Leave Discussion March 2024
UKCGE Parental Leave Discussion March 2024
 
CapTechU Doctoral Presentation -March 2024 slides.pptx
CapTechU Doctoral Presentation -March 2024 slides.pptxCapTechU Doctoral Presentation -March 2024 slides.pptx
CapTechU Doctoral Presentation -March 2024 slides.pptx
 
General views of Histopathology and step
General views of Histopathology and stepGeneral views of Histopathology and step
General views of Histopathology and step
 
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptxPISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
PISA-VET launch_El Iza Mohamedou_19 March 2024.pptx
 
3.21.24 The Origins of Black Power.pptx
3.21.24  The Origins of Black Power.pptx3.21.24  The Origins of Black Power.pptx
3.21.24 The Origins of Black Power.pptx
 
Quality Assurance_GOOD LABORATORY PRACTICE
Quality Assurance_GOOD LABORATORY PRACTICEQuality Assurance_GOOD LABORATORY PRACTICE
Quality Assurance_GOOD LABORATORY PRACTICE
 
The Singapore Teaching Practice document
The Singapore Teaching Practice documentThe Singapore Teaching Practice document
The Singapore Teaching Practice document
 
Practical Research 1 Lesson 9 Scope and delimitation.pptx
Practical Research 1 Lesson 9 Scope and delimitation.pptxPractical Research 1 Lesson 9 Scope and delimitation.pptx
Practical Research 1 Lesson 9 Scope and delimitation.pptx
 
How to Add a New Field in Existing Kanban View in Odoo 17
How to Add a New Field in Existing Kanban View in Odoo 17How to Add a New Field in Existing Kanban View in Odoo 17
How to Add a New Field in Existing Kanban View in Odoo 17
 
5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...5 charts on South Africa as a source country for international student recrui...
5 charts on South Africa as a source country for international student recrui...
 
HED Office Sohayok Exam Question Solution 2023.pdf
HED Office Sohayok Exam Question Solution 2023.pdfHED Office Sohayok Exam Question Solution 2023.pdf
HED Office Sohayok Exam Question Solution 2023.pdf
 
Philosophy of Education and Educational Philosophy
Philosophy of Education  and Educational PhilosophyPhilosophy of Education  and Educational Philosophy
Philosophy of Education and Educational Philosophy
 
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
2024.03.23 What do successful readers do - Sandy Millin for PARK.pptx
 
Benefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive EducationBenefits & Challenges of Inclusive Education
Benefits & Challenges of Inclusive Education
 

simple chemical reactions - chemistry

  • 1. KS3 Chemistry 7F Simple Chemical Reactions
  • 2. Contents 7F Simple Chemical Reactions Word equations Reactions with oxygen Chemical reactions everywhere Summary activities Reactions with acid
  • 3. Physical and chemical changes How many physical and chemical changes can you spot?
  • 4. What is a chemical reaction? Can you think of any other chemical reactions? Chemical reactions do not only happen in the laboratory. Chemical reactions happen anywhere that new substances are made: cooking rusting sticking burning making metals living!
  • 7. Reactants and products The starting substances used in a reaction are reactants . The new substances formed in a reaction are products . reactants In a chemical reaction, one or more new substances are formed. The arrow means “ change into ”. In a chemical reaction, all the reactants change into the products. It is difficult to reverse a chemical reaction and change the products back into the reactants. products
  • 8. More about chemical changes Chemical changes are usually difficult to reverse. Magnesium burns in oxygen to form magnesium oxide. It is not possible to “un-burn” the magnesium once it has been burnt. Many reactions need energy to get them started. Many reactions (like the burning of magnesium) give out heat energy once the reaction has started. Heat energy being given out is one sign of a chemical reaction. What other signs of a chemical reaction are there? magnesium oxide oxygen magnesium
  • 9. Contents 7F Simple Chemical Reactions Word equations Reactions with oxygen Chemical reactions everywhere Summary activities Reactions with acid
  • 10. Reaction of acid with metals
  • 11. Test for hydrogen magnesium + acid hydrogen burning splint Many metals react with acids. When this happens the metal fizzes as bubbles are produced. What do the bubbles mean? A gas is produced. How can you test to find out if the gas produced is hydrogen? Place a burning splint next to the mouth of test tube. A ‘squeaky pop’ as the gas ignites shows that hydrogen is the gas produced in this reaction.
  • 12. Reaction of acid with a metal carbonate
  • 13. Test for carbon dioxide When a metal carbonate reacts with acid it fizzes and then seems to disappear. The carbonate and the acid have reacted and changed into a salt , water and carbon dioxide . When carbon dioxide gas is bubbled through limewater, it turns the limewater cloudy or milky white . Carbon dioxide can be tested for using the limewater test. a salt metal carbonate acid water carbon dioxide
  • 14. Contents 7F Simple Chemical Reactions Word equations Reactions with oxygen Contents Chemical reactions everywhere Summary activities Reactions with acid
  • 15. Word equations 3. The names of the products. A word equation is used as a quick, shorthand way of writing a chemical reaction. There are always three parts to a word equation: 1. The names of the reactants. 2. An arrow. reactants products What is the word equation for hydrogen reacting with oxygen to form water? water oxygen hydrogen
  • 16. Reactant or product? product reactant reactant product magnesium oxide magnesium copper oxide copper In this chemical reaction , which substances are the reactants and which substances are products? Substance Reactant or Product? magnesium oxide magnesium copper oxide copper
  • 17.
  • 18. Contents 7F Simple Chemical Reactions Word equations Reactions with oxygen Contents Chemical reactions everywhere Summary activities Reactions with acid
  • 19. What is combustion? Combustion is the scientific word for burning and is a type of chemical reaction. Combustion is the reaction when a substance burns and reacts with oxygen to produce heat and light energy.
  • 20. Using combustion Burning has been an important source of energy since primitive man and is still a hugely important process today. How different would life be without combustion? Burning fuel, like coal, petrol and natural gas, provides > 90% of the energy needed for transport, factories and in the home.
  • 22. Equations for combustion 3. Methane burns and forms carbon dioxide and water: 1. Coal (made from carbon) burns and forms carbon dioxide: When substance burns and react with oxygen the new substances formed are called “ oxides ”. What are the word equations for these combustion reactions? 2. Hydrogen burns and forms dihydrogen oxide (i.e water!): carbon dioxide oxygen carbon water oxygen hydrogen carbon dioxide oxygen methane water
  • 23.
  • 24. Candle burning in bell jar
  • 25. Contents 7F Simple Chemical Reactions Acid reactions Reactions with oxygen Contents Chemical reactions everywhere Summary activities Reactions with acid
  • 26.