Chemistry Chapter 1

Front 1

Identify quantitative or qualitative and why?
The sun is approximately 93 million mi from Earth

Back 1

Quantitative.
This statement clearly involves a measurable distance

Front 2

Identify quantitative or qualitative and why?
Leonardo da Vinci was a better painter than Michelangelo

Back 2

Qualitative.
This is a value judgment. There is no numerical scale of measurement for artistic
excellence.

Front 3

Identify quantitative or qualitative and why?
Ice is less dense than water

Back 3

Qualitative.
If the numerical values for the densities of ice and water were given, it would be a
quantitative statement.

Front 4

Identify quantitative or qualitative and why?
Butter tastes better than margarine.

Back 4

Qualitative.
Another value judgment

Front 5

Identify quantitative or qualitative and why?
A stitch in time saves nine

Back 5

Qualitative.
Even though numbers are involved, they are not the result of measurement

Front 6

Classify the following as a hypothesis, a law, or a theory:

Beethoven's contribution to music would have been much greater if he had married

Back 6

hypothesis

Front 7

Classify the following as a hypothesis, a law, or a theory:

An autumn leaf gravitates toward the ground because there is an attractive force between the leaf and the Earth.

Back 7

law

Front 8

Classify the following as a hypothesis, a law, or a theory:

All matter is composed of very small particles called atoms.

Back 8

theory

Front 9

Does the following describe a chemical or a physical property?
Oxygen gas supports combustion

Back 9

Chemical property.
Oxygen gas is consumed in a combustion reaction; its composition and identity are
changed.

Front 10

Does the following describe a chemical or a physical property?
Fertilizers help to increase agricultural production

Back 10

Chemical property.
The fertilizer is consumed by the growing plants; it is turned into vegetable matter
(different composition).

Front 11

Does the following describe a chemical or a physical property?
Water boils below 100*C on top of a mountain

Back 11

Physical property.
The measurement of the boiling point of water does not change its identity or
composition.

Front 12

Does the following describe a chemical or a physical property?
Lead is denser than aluminum

Back 12

Physical property.
The measurement of the densities of lead and aluminum does not change their
composition.

Front 13

Does the following describe a chemical or a physical property?
Uranium is a radioactive element

Back 13

Chemical property.
When uranium undergoes nuclear decay, the products are chemically different
substances.

Front 14

Does the following describe a chemical or a physical property?
The helium gas inside a balloon tends to leak out after a few hours

Back 14

Physical change.
The helium isn't changed in any way by leaking out of the balloon.

Front 15

Does the following describe a chemical or a physical property?
A flashlight beam slowly gets dimmer and finally goes out.

Back 15

Chemical change in the battery.

Front 16

Does the following describe a chemical or a physical property?
Frozen orange juice is reconstituted by adding water to it

Back 16

Physical change.
The orange juice concentrate can be regenerated by evaporation of the water.

Front 17

Does the following describe a chemical or a physical property?
The growth of plants depends on the sun's energy in a process called photosynthesis

Back 17

Chemical change.
Photosynthesis changes water, carbon dioxide, etc., into complex organic matter

Front 18

Does the following describe a chemical or a physical property?
A spoonful of table salt dissolves in a bowl of soup

Back 18

Physical change.
The salt can be recovered unchanged by evaporation

Front 19

Classify the following as an element, a compound, a homogenous mixture, or a heterogeneous mixture:
seawater

Back 19

homogeneous mixture

Front 20

Classify the following as an element, a compound, a homogenous mixture, or a heterogeneous mixture:
helium gas

Back 20

element

Front 21

Classify the following as an element, a compound, a homogenous mixture, or a heterogeneous mixture:

sodium chloride (table salt)

Back 21

compound

Front 22

Classify the following as an element, a compound, a homogenous mixture, or a heterogeneous mixture:

a bottle of soft drink

Back 22

homogeneous mixture

Front 23

Classify the following as an element, a compound, a homogenous mixture, or a heterogeneous mixture:

a milkshake

Back 23

heterogeneous mixture

Front 24

Classify the following as an element, a compound, a homogenous mixture, or a heterogeneous mixture:.

air in a bottle

Back 24

homogeneous mixture

Front 25

Classify the following as an element, a compound, a homogenous mixture, or a heterogeneous mixture:

concrete

Back 25

heterogeneous mixture

Front 26

What is the name of the element represented by the chemical symbol?

Li

Back 26

Lithium

Front 27

What is the name of the element represented by the chemical symbol?

F

Back 27

Fluorine

Front 28

What is the name of the element represented by the chemical symbol?

P

Back 28

Phosphorus

Front 29

What is the name of the element represented by the chemical symbol?

Cu

Back 29

Copper

Front 30

What is the name of the element represented by the chemical symbol?

As

Back 30

Arsenic

Front 31

What is the name of the element represented by the chemical symbol?

Zn

Back 31

Zinc

Front 32

What is the name of the element represented by the chemical symbol?

Cl

Back 32

Chlorine

Front 33

What is the name of the element represented by the chemical symbol?

Pt

Back 33

Platinum

Front 34

What is the name of the element represented by the chemical symbol?

Mg

Back 34

Magnesium

Front 35

What is the name of the element represented by the chemical symbol?

U

Back 35

Uranium

Front 36

What is the name of the element represented by the chemical symbol?

Al

Back 36

Aluminum

Front 37

What is the name of the element represented by the chemical symbol?

Si

Back 37

silicon

Front 38

What is the name of the element represented by the chemical symbol?

Ne

Back 38

Neon

Front 39

Give the chemical symbol for the following element:

potassium

Back 39

K

Front 40

Give the chemical symbol for the following element:

tin

Back 40

Sn

Front 41

Give the chemical symbol for the following element:

chromium

Back 41

Cr

Front 42

Give the chemical symbol for the following element:

boron

Back 42

B

Front 43

Give the chemical symbol for the following element:

barium

Back 43

Ba

Front 44

Give the chemical symbol for the following element:

plutonium

Back 44

Pu

Front 45

Give the chemical symbol for the following element:

sulfur

Back 45

S

Front 46

Give the chemical symbol for the following element:

argon

Back 46

Ar

Front 47

Give the chemical symbol for the following element:

mercury

Back 47

Hg

Front 48

Classify the following substance as an element or a compound:

hydrogen

Back 48

element

Front 49

Classify the following substance as an element or a compound:

water

Back 49

compound

Front 50

Classify the following substance as an element or a compound:

gold

Back 50

element

Front 51

Classify the following substance as an element or a compound:

sugar

Back 51

compound

Front 52

Bromine is a reddish-brown liquid. Calculaate its density (in g/mL) if 586 g of the substance occupies 188 mL.

Back 52

Density =

mass / volume :::

586 g / 188 mL = 3.12 g/mL

Front 53

Express the following number in scientific notation:

0.000000027

Back 53

2.7 * 10 ^-8

Front 54

Express the following number in scientific notation:

356

Back 54

3.56 * 10 ^2

Front 55

Express the following number in scientific notation:

47,764

Back 55

4.7764 * 10 ^4

Front 56

Express the number in scientific notation:

0.096

Back 56

9.6 * 10 ^-2

Front 57

What is the number of significant figures in the following measurement?

4867 mi

Back 57

four

Front 58

What is the number of significant figures in the following measurement?

56mL

Back 58

two

Front 59

What is the number of significant figures in the following measurement?

60,104 ton

Back 59

five

Front 60

What is the number of significant figures in the following measurement?

2900 g

Back 60

two, three, or four

Front 61

What is the number of significant figures in the following measurement?

40.2 g/cm^3

Back 61

three

Front 62

What is the number of significant figures in the following measurement?

0.0000003 cm

Back 62

one

Front 63

What is the number of significant figures in the following measurement?

0.07 min

Back 63

one

Front 64

What is the number of significant figures in the following measurement?

4.6 * 10^19 atoms

Back 64

two

Front 65

How many significant figures are there in the following?

0.006 L

Back 65

one

Front 66

How many significant figures are there in each of the following?

0.0605 dm

Back 66

three

Front 67

How many significant figures are there in each of the following?

60.5 mg

Back 67

three

Front 68

How many significant figures are there in each of the following?

605.5 cm^2

Back 68

four

Front 69

How many significant figures are there in each of the following?

960 * 10 ^-3

Back 69

two or three

Front 70

How many significant figures are there in each of the following?

6 kg

Back 70

one

Front 71

How many significant figures are there in each of the following?

60 m

Back 71

one or two