Chapter 1

Question 1

Mass

Answer 1

Quantity of material

Question 2

Substance

Answer 2

Kind of matter that can’t be separated into other kinds of matter by any physical process

Question 3

Element

Answer 3

A substance that can’t be broken down by any chemical reaction into simpler substances

Question 4

Compound

Answer 4

A substance of two or more elements chemically combined

Question 5

Mixture

Answer 5

A material that can be separated by physical means into two or more substances

Question 6

Homogenous mixtures

Answer 6

(Solution) is uniform in all of its properties

Question 7

Heterogeneous mixture

Answer 7

Physically distinct parts with different properties

Question 8

Phase

Answer 8

any part of a sample that has a uniform composition and properties (ex: mixed salt and sugar are two different phases)

Question 9

Precision

Answer 9

Closeness of a set of values from similar measurements of an identical quantity

Question 10

Accuracy

Answer 10

Closeness of a single value to its true measurement

Question 11

Multiplication and division

Answer 11

Least number of sig figs

Question 12

Addition and Subtraction

Answer 12

Least number of decimal places

Question 13

Speed

Answer 13

Distance/time

Question 14

Volume

Answer 14

Any length cubed (typically dm3=1L or cm3 1mL)

Question 15

Density

Answer 15

Mass per unit / volume d=m/V

Question 16

Length

Answer 16

Meter (m)

Question 17

Mass

Answer 17

Kilogram (kg)

Question 18

Time

Answer 18

Second (s)

Question 19

Temperature

Answer 19

Kelvin (K)

Question 20

Amount of substance

Answer 20

Mole (mol)

Question 21

Electric current

Answer 21

Ampere (A)

Question 22

Luminous intensity

Answer 22

Candela (cd)

Question 23

Kilo

Answer 23

10^3 (K)

Question 24

Deci

Answer 24

10^-1 (d)

Question 25

Centi

Answer 25

10^-2 (c)

Question 26

Milli

Answer 26

10^-3 (m)

Question 27

Micro

Answer 27

10^-6 (u)

Question 28

Nano

Answer 28

10^-9 (n)

Question 29

Pico

Answer 29

10^-12 (p)

Question 30

Area

Answer 30

Length x length (width) m^2

Question 31

Acceleration

Answer 31

Change in speed per unit time (m/s^2)