Chapter 2

Question 1

Multiplication/Division Significant Figures

Answer 1

Answer has the same number of significant figures as the measurement with the fewest number of significant figures.

Question 2

Addition/Subtraction Significant Figures

Answer 2

Answer has the same number of decimal places as the measurement with the fewest decimal places.

Question 3

Deci (d)

Answer 3

0.1 - Tenth

Question 4

Centi (c)

Answer 4

0.01 - Hundredths

Question 5

Milli (m)

Answer 5

0.001 - Thousandth

Question 6

Micro (µ)

Answer 6

0.000001 - Millionth

Question 7

Nano (n)

Answer 7

0.000000001 - Billonth

Question 8

Pico (p)

Answer 8

0.000000000001 - Trillionth

Question 9

When one side of an equation is squared, you have to square the other side as well

Answer 9

When one side of an equation is squared, you have to square the other side as well

Question 10

Density

Answer 10

ρ = m/V

Question 11

Element

Answer 11

Simple substance that has the same number of protons.

Question 12

Isotope

Answer 12

Atoms with the same number of protons but different numbers of neutrons.

Question 13

Homogenous Mixture

Answer 13

Composition is uniform throughout the sample.

Question 14

Heterogeneous Mixture

Answer 14

Composition is not uniform throughout the sample.

Question 15

Physical Property

Answer 15

Characteristic observed without changing the identity of composition of the substance.

Question 16

Chemical Property

Answer 16

Characteristic of how a substance undergoes chemical change.

Question 17

Physical Change

Answer 17

Change in physical appearance without changing its chemical composition.

Question 18

Chemical Change

Answer 18

When a substance undergoes a change in composition.

Question 19

Signs of Chemical Change

Answer 19

• Change in color
• Formation of a solid
• Formation of bubbles
• Change in temperature
• Smell
• Flame

Question 20

Celsius to Fahrenheit

Answer 20

(°C x 9/5) + 32 = F

Question 21

Fahrenheit to Celsius

Answer 21

(°F - 32) x 5/9 = °C

Question 22

Celsius to Kelvin

Answer 22

°C + 273.15 = K

Question 23

Specific Heat Capacity Equation

Answer 23

Q = mcΔT
Q - Heat Energy
M - Mass
C - Specific Heat Capacity
ΔT - Change in Temperature
ΔT = T(f) - T(i)

Question 24

13
Al
26.981

Answer 24

Atomic Number
Atom Symbol
Atomic Mass

Question 25

Ions

Answer 25

Atoms or groups of atoms with a positive or negative charge.

Question 26

Cation

Answer 26

Atom with positive charge

Question 27

Anion

Answer 27

Atom with negative charge

Question 28

Mass Number (A)

Answer 28

Protons + Neutrons

Question 29

Chemical Symbol Notation

Answer 29

ᴹᵃˢˢ ᴺᵘᵐᵇᵉʳ
X <— Element Symbol
ᴬᵗᵒᵐᶦᶜ ᴺᵘᵐᵇᵉʳ

Question 30

Atomic Mass

Answer 30

The weighted average of the masses of all naturally occurring isotopes using each isotope’s natural abundance.

Question 31

Atomic Mass Equation

Answer 31

Σₙ (fraction of isotope n) x (mass of isotope n) = Atomic Mass