Chapter 1.1 Some Fundamental Definitions

Question 1

Chemistry

Answer 1

the study of matter and its properties, the changes that matter undergoes, and the energy associated with those changes

Question 2

Matter

Answer 2

anything that has mass and volume

Question 3

Composition

Answer 3

types & amounts of simpler substances that make it up

Question 4

Substance

Answer 4

types of matter that has a fixed composition

Question 5

Properties

Answer 5

Characteristics that give each substance its unique identity (physical & chemical)

Question 6

Chemical Change (Chemical Reaction)

Answer 6

occurs when a substance is converted to a different substance

Question 7

Solid

Answer 7

Fixed shape, non conforming, NOT defined by hardness or rigidity

Question 8

Liquid

Answer 8

Varying shape that conforms to its container, but has an upper surface (cannot go higher than its volume), particles are close together but move randomly

Question 9

Gas

Answer 9

varying shape, conforming and fills entire container

Question 10

Energy

Answer 10

the ability to do work

Question 11

Total Energy

Answer 11

the sum of kinetic & potential energy

1. When energy is converted from one form to the other, it is conserved, not destroyed
2. Situations of lower energy are more stable and more favored over situations of higher energy (less stable)