Chapter 1

Question 1

Matter

Answer 1

anything that occupies space and has mass

Question 2

Mass

Answer 2

measure of the quantity of matter

Question 3

Weight

Answer 3

force that gravity exerts on an object’s mass

Question 4

Density

Answer 4

mass / volume

Question 5

Volume

Answer 5

mass / density

Question 6

mass

Answer 6

density x volume

Question 7

K = ?

Answer 7

°C + 273.15

Question 8

Significant Figures

Answer 8

• Any digit that is not zero is significant
• Zeros between nonzero digits are significant
• Zeros to the left of the first nonzero digit are not significant
• If a number is greater than 1, then all zeros to the right of the decimal point are significant
• If a number is less than 1, then only the zeros that are at the end and in the middle of the number are significant
• Zeros to the right of the last non-zero digit are ONLY significant if there is a decimal

Question 9

Accuracy

Answer 9

how close a measurement is to the true value

Question 10

Precision

Answer 10

how close a set of measurements are to each other

Question 11

Dimensional Analysis

Answer 11

given unit x desired unit / given unit = desired unit

Question 12

hypothesis

Answer 12

tentative explanation for a set of observations

Question 13

law

Answer 13

concise statement of a relationship between phenomena that is always the same under the same conditions …. the “what”

Question 14

theory

Answer 14

unifying principle that explains a body of facts and/or those laws that are based on them… the “what” and “why”

Question 15

chemistry

Answer 15

study of matter and changes it undergoes

Question 16

matter

Answer 16

anything that occupies space and has mass.

Question 17

substance

Answer 17

form of matter that has a definite composition and distinct properties

Question 18

Law of conservation of mass

Answer 18

Mass can neither be created nor destroyed … just transformed from one form to another

Question 19

Physical means

Answer 19

can be used to separate a mixture into its pure components

Question 20

Chemical means

Answer 20

must be used to separate a compound into its elements

Question 21

Extensive

Answer 21

Property that depends on the amount of material present

Question 22

Intensive

Answer 22

Property that depends on the material present (independent of amount)

Question 23

Types of energy

Answer 23

Kinetic
Potential (physical, chemical)
Thermal