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1P9: Tuesday 9th
November,
2010
Matter and Particles: Chemical
Changes
Homework
• Homework set on Thursday 4th was due in
yesterday, Monday 8th
November…
– Please hand this in by the end of this lesson, or
first thing tomorrow morning otherwise you will
receive a de-merit!
Check your notebooks!
Oxygen atoms
Element
Hydrogen atoms
Element
Water Molecules
Compound
Iron atoms
Element
Sulphur atoms
Element
Iron sulphide molecules
Compound
Let’s review our learning: show me boards
• How did we separate the Iron and Sulphur mixture?
• What do we call a material when two elements join
together?
• What do we call the process when two elements chemically
join together?
• Could we separate the compound using a magnet?
• Are metals on the left or right of the Periodic Table?
• Are non-metals on the left or right of the Periodic Table?
• What are the only 2 liquid elements at room temperature?
• Are the gases on the far left or far right of the Periodic
Table?
• What is at the centre of an atom?
• What orbits the atom?
Chemical Reactions
• Chemical reactions happen in our lives every
day!
• Here are some examples:
Frying an egg
Lighting a match
More chemical reactions…
Petrol burning in a
car engine
Your body
digesting food
Can you think of any more chemical reactions?
Chemical Changes
• Please copy this into your notebooks:
There are many, many different types of
chemical reactions. They all have some
things in common. We are going to
investigate some chemical reactions.
Time for an experiment!
• Burning Magnesium
– REMEMBER, do NOT look directly into the white
flame!
– Draw a labelled diagram of the experiment
– Note all of your observations
– What did Magnesium look like before it was
burned?
– What did it look like after?
Word Equations
Add this into your notebook after your report on
the experiment:
Magnesium + Oxygen  Magnesium Oxide
When anything burns it takes in Oxygen from
the air.
Let’s review our results: show me boards
• What is the chemical symbol for Magnesium?
• What happened in the experiment?
• What did Magnesium look like before it was burned?
• What did it look like after it was burned?
• What new product was made?
• Was the new product a compound or a mixture?
• Can we separate the compound back to the elements?
• Where did the Oxygen come from to burn with the
Magnesium?
• What is the chemical symbol for Oxygen?
What’s next?
• You will be performing more experiments on
chemical changes on Thursday… 
• Using your traffic light colours – please let me
know if you have understood chemical
reactions today!

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1 p9 chemical changes 091010

  • 1. 1P9: Tuesday 9th November, 2010 Matter and Particles: Chemical Changes
  • 2. Homework • Homework set on Thursday 4th was due in yesterday, Monday 8th November… – Please hand this in by the end of this lesson, or first thing tomorrow morning otherwise you will receive a de-merit!
  • 3. Check your notebooks! Oxygen atoms Element Hydrogen atoms Element Water Molecules Compound Iron atoms Element Sulphur atoms Element Iron sulphide molecules Compound
  • 4. Let’s review our learning: show me boards • How did we separate the Iron and Sulphur mixture? • What do we call a material when two elements join together? • What do we call the process when two elements chemically join together? • Could we separate the compound using a magnet? • Are metals on the left or right of the Periodic Table? • Are non-metals on the left or right of the Periodic Table? • What are the only 2 liquid elements at room temperature? • Are the gases on the far left or far right of the Periodic Table? • What is at the centre of an atom? • What orbits the atom?
  • 5. Chemical Reactions • Chemical reactions happen in our lives every day! • Here are some examples: Frying an egg Lighting a match
  • 6. More chemical reactions… Petrol burning in a car engine Your body digesting food Can you think of any more chemical reactions?
  • 7. Chemical Changes • Please copy this into your notebooks: There are many, many different types of chemical reactions. They all have some things in common. We are going to investigate some chemical reactions.
  • 8. Time for an experiment! • Burning Magnesium – REMEMBER, do NOT look directly into the white flame! – Draw a labelled diagram of the experiment – Note all of your observations – What did Magnesium look like before it was burned? – What did it look like after?
  • 9. Word Equations Add this into your notebook after your report on the experiment: Magnesium + Oxygen  Magnesium Oxide When anything burns it takes in Oxygen from the air.
  • 10. Let’s review our results: show me boards • What is the chemical symbol for Magnesium? • What happened in the experiment? • What did Magnesium look like before it was burned? • What did it look like after it was burned? • What new product was made? • Was the new product a compound or a mixture? • Can we separate the compound back to the elements? • Where did the Oxygen come from to burn with the Magnesium? • What is the chemical symbol for Oxygen?
  • 11. What’s next? • You will be performing more experiments on chemical changes on Thursday…  • Using your traffic light colours – please let me know if you have understood chemical reactions today!