Chemistry is the study of matter and the changes

it undergoes

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

What can you observe about the arm below?

Now what can you observe about the same arm?

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

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

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