1. Ch.1: Matter and Change
1.1 Chemistry

2. Sciences used to be divided into strict categories
physical (nonliving)
biological (living)
Chemistry has parts that fall under both categories
many sciences are so interrelated that you can’t categorize them in those ways anymore.

3. Chemistry study of matter and the changes it undergoes
chemists use instruments to improve their ability to observe and make measurements

4. Chemistry
chemists work with chemicals (any substance with definite composition)
all matter has chemical basis whether it is living or nonliving

5. Branches of Chemistry organic- study of compounds containing carbon
inorganic- study of compounds that aren’t organic
physical- study of changes of matter and their energy

6. Branches of Chemistry analytical- study of composition of materials
biochemistry- study of substances and processes in living things
theoretical- use of math and computers to understand chemical behaviors and design new compounds

7. Types of Research Basic Research- done to increase knowledge
Applied Research- done to solve a problem
Technological Development- done to improve quality of life
technology – application of knowledge (usually scientific) for practical purposes

8. 1.2 Matter and Its Properties
Ch. 1: Matter and Change
1.2 Matter and Its Properties

9. Terms Matter- anything that has mass and volume
Atom- smallest unit of an element that keeps the properties of element
Element- pure substance made of only one type of atom
Compound- substance made of 2 or more types of atoms that are chemically bonded
Molecule- type of compound in which bonds are covalent bonds

10. Properties of Matter
chemists use characteristic properties to tell substances apart and to separate them
some properties define a group of substances

11. Types of Properties Extensive- depend on the amount of matter
Ex: volume, mass, amount of energy
Intensive- do not depend on the amount
Ex: density, boiling point, ability to conduct

12. Types of Properties
Physical- characteristics that can be observed or measured without changing the identity of a substance
Chemical- relates to a substances ability to undergo changes that transform it into a different substance
Easiest to see when a chemical is reacting