1. Chemistry is the study
of matter and the
changes it undergoes

2. Matter
• Anything that has mass and takes up space
– Mass is a measure that reflects the amount of
matter
• Weight is a measure of the amount of matter
the also the effects of Earths gravitational pull
on that matter
• Mass is a way to measure matter
independently of gravitational force

3. What can you observe about the
arm below?

4. Now what can you observe about the
same arm?

5. Structure of Matter
• Much of matter is Macroscopic, that which we
can observe with our own eyes
• Matter can be broken down into smaller pieces
(ex. Elements, Atoms)
• All that we observe about matter is due to
changes that the atoms undergo
• Chemistry is the explanation of the
submicroscopic events that lead to macroscopic
changes
• Scientists use models to represent things that are
hard to visualize

6. Types of Chemistry
• Organic-most carbon containing chemicals
• Inorganic-matter that does not contain carbon
• Physical- the behavior and changes of matter and the
related energy changes
• Analytical-components and composition of substances
• Biochemistry-matter and processes of living organisms
• Environmental-matter and the environment
• Industrial-chemical processes in industry
• Polymer-polymers and plastics
• Theoretical-chemical interactions
• Thermochemistry-heat involved in chemical processes

7. Exit Notes
• Section 1.2 Assessment, Ques. 9
• Summarize why it is important for chemists to
study changes in the world at a subatomic
level