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Physical Science Final Exam

Total questions: 70

Worksheet time: 1hrs 13mins

Name
Class
Date
1.

Matter that has a definite volume and a definite shape is a ____________.

a)

solid

b)

liquid

c)

gas

d)

plasma

2.

When two or more substances are physically combined, the result is a(n) ____________.

a)

chemical change

b)

element

c)

compound

d)

mixture

3.

A type of matter formed by chemically joining two or more elements is known as a

a)

compound

b)

solution

c)

colloid

d)

suspension

4.

The color of ink is a ____________.

a)

physical change

b)

physical property

c)

chemical change

d)

chemical property

5.

Three examples of physical changes are

a)

sawing wood, crushing a can, and burning a marshmallow

b)

burning of gasoline, rotting an egg, and exploding fireworks

c)

freezing of water, evaporation of gasoline, and rusting of a nail

d)

boiling of water, blowing up a balloon, and melting a candle

6.

In a solution, the substance that is being dissolved is the ____________.

a)

solute

b)

solvent

c)

liquid

d)

gas

7.

A solution that contains more of the solute than it can normally hold at a given temperature is ____________.

a)

saturated

b)

supersaturated

c)

unsaturated

d)

mega-saturated

8.

Which part of the periodic table indicates the number of energy levels in the electron cloud?

a)

Group

b)

Family

c)

Valence electrons

d)

Period

9.

What is an atom’s nucleus made of?

a)

protons and electrons

b)

protons only

c)

protons and neutrons

d)

neutrons only

10.

Atoms of the same element that have different numbers of neutrons are called

a)

molecules

b)

ions

c)

protons

d)

isotopes

11.

Which particles determine the atomic number of an element?

a)

protons only

b)

neutrons and protons

c)

neutrons only

d)

protons and electrons

12.

At room temperature, most metals are ____________.

a)

Solids

b)

Liquids

c)

Gases

d)

Plasma

13.

Hydrogen is in group 1 with lithium, sodium, potassium, rubidium, cesium, and francium because it ____________

a)

Is a metal

b)

Is a gas

c)

Has 1 valence electron

d)

Has 1 energy level

14.

Which statement about the arrangement of the periodic table is not true?

a)

Noble gases are in the group farthest to the right

b)

Metals are found on the left side of the periodic table

c)

Rare earth elements are in the first column on the left

d)

Transition metals are in the center of the periodic table

15.

The chemical bond formed when two atoms share electrons is called a(n)

a)

Covalent bond

b)

Ionic bond

c)

Metallic bond

d)

Electron bond

16.

Which pair of atoms will combine with each other and form an ionic bond?

a)

C and O

b)

C and H

c)

Ca and Mg

d)

Ca and Br

17.

Which element is most likely to gain electrons in a chemical reaction?

a)

Kr

b)

K

c)

Br

d)

Ca

18.

How does an atom of aluminum become an ion?

a)

It gains 3 electrons

b)

It gains 3 protons

c)

It loses 3 electrons

d)

It loses 3 neutrons

19.

Which of the following is a similarity between ionic and covalent bonds?

a)

Both include the gaining and losing of electrons

b)

Both include the sharing of electrons

c)

Both make the elements more stable

d)

Both are typically found as solids at room temperature.

20.

Why does an increase in temperature result in an increase in reaction rate?

a)

It raises the activation energy

b)

It causes the molecules to increase in size

c)

It decreases the concentration of reactants

d)

It causes an increase in the number of particle collisions

21.

The Law of Conservation of Mass states

a)

Mass never stays constant

b)

Mass is always added during a chemical change

c)

Mass is always lost during a chemical change

d)

Mass is not lost or created during a chemical change

22.

Which of the following observations does NOT indicate that a chemical reaction has occurred?

a)

formation of a precipitate

b)

production of a gas

c)

state of matter change

d)

heat and light released

23.

What type of mixture is Salad dressing?

a)

Heterogeneous

b)

Homogeneous

c)

Colloid

d)

Solution

24.

What type of mixture is trail mix?

a)

Heterogeneous

b)

Homogeneous

c)

Colloid

d)

Solution

25.

What type of a mixture is lemonade?

a)

Homogeneous

b)

Heterogeneous

c)

Colloidal

d)

Suspension

26.

What kind of change is burning popcorn?

a)

Chemical change (C)

b)

Physical change (P)

c)

Both are physical changes (P)

d)

Both are chemical changes (C)

27.

What kind of change is the rusting of a fishing pole?

a)

Chemical change (C)

b)

Physical change (P)

c)

Melting change (M)

d)

Nuclear change (N)

28.

What kind of change happens when you boil water?

a)

Physical change (P)

b)

Chemical change (C)

c)

Nuclear change (N)

d)

No change (N)

29.

At what temperature is the solubility of KBr the same as that of KNO3?

a)

About 70°C

b)

About 20°C

c)

About 50°C

d)

About 90°C

30.

Which salt’s solubility is the least affected by temperature?

a)

NaCl (Sodium chloride)

b)

KNO₃ (Potassium nitrate)

c)

CuSO₄ (Copper(II) sulfate)

d)

KCl (Potassium chloride)

31.

A piece of wood that measures 3 cm by 6 cm by 4 cm has a mass of 80 g. What is the density of the wood?

a)

Density = 1.11 g/cm³

b)

Density = 2.22 g/cm³

c)

Density = 0.89 g/cm³

d)

Density = 3.33 g/cm³

32.

A graduated cylinder has 33.5 mL of water. A piece of metal is added to the water and the new volume is now 46.2 mL. If the metal has a mass of 16.25 g, what is its density?

a)

1.43 g/mL

b)

0.78 g/mL

c)

2.10 g/mL

d)

0.52 g/mL

33.

Which of the following must be labeled in the Bohr Model of an atom?

a)

Only protons and neutrons

b)

Only electrons

c)

Protons, neutrons, and electrons

d)

Only protons and electrons

34.

Why do elements form compounds? What elements never form compounds and why?

a)

Elements form compounds to achieve a stable electron configuration; noble gases never form compounds because they already have a stable configuration.

b)

Elements form compounds to increase their atomic mass; alkali metals never form compounds because they are too reactive.

c)

Elements form compounds to decrease their reactivity; halogens never form compounds because they are already stable.

d)

Elements form compounds to lose energy; transition metals never form compounds because they have incomplete shells.

35.

Name the following ionic compound: MgO.

a)

Magnesium oxide

b)

Magnesium hydroxide

c)

Magnesium peroxide

d)

Magnesium carbonate

36.

Name the following ionic compound: Be₃P₂.

a)

Beryllium phosphide

b)

Beryllium diphosphide

c)

Triberyllium diphosphide

d)

Beryllium phosphate

37.

Give the correct chemical formula for the following name: Ammonium fluoride.

a)

NH4F

b)

NH3F

c)

NH4Cl

d)

NH3Cl

38.

Give the correct chemical formula for the following name: Iron (II) chloride.

a)

FeCl2

b)

FeCl3

c)

Fe2Cl3

d)

Fe2Cl

39.

Name the following compound: P₄O₆.

a)

Phosphorus trioxide

b)

Phosphorus pentoxide

c)

Tetraphosphorus hexoxide

d)

Phosphoric acid

40.

Name the following compound: N₂S.

a)

Dinitrogen sulfide

b)

Nitrogen disulfide

c)

Nitrogen monosulfide

d)

Dinitrogen monosulfide

41.

Give the correct chemical formula for the following name: Tetracarbon decahydride.

a)

C4H10

b)

C10H4

c)

C4H12

d)

C2H10

42.

Give the correct chemical formula for the following name: Triboron heptabromide.

a)

B3Br7

b)

B2Br7

c)

B3Br6

d)

BBr3

43.

Choose the chemical reaction that is balanced and classified correctly.

a)

4 PBr₃ → P₄ + 6 Br₂ (Balanced equation; classification: decomposition)

b)

2 PBr₃ → P₂ + 3 Br₂ (Balanced equation; classification: synthesis)

c)

PBr₃ → P + Br₂ (Balanced equation; classification: single replacement)

d)

4 PBr₃ → 2 P₂Br₄ (Balanced equation; classification: decomposition)

44.

Balance the following chemical equation: ____N₂ + ____O₂ → ____N₂O₅

a)

1 N₂ + 5 O₂ → 2 N₂O₅

b)

2 N₂ + 5 O₂ → 2 N₂O₅

c)

1 N₂ + 2.5 O₂ → 1 N₂O₅

d)

2 N₂ + 2.5 O₂ → 2 N₂O₅

45.

Balance the following chemical equation: ____CH₄ + ____O₂ → ____CO₂ + ____H₂O

a)

1 CH₄ + 2 O₂ → 1 CO₂ + 2 H₂O

b)

1 CH₄ + 1 O₂ → 1 CO₂ + 2 H₂O

c)

2 CH₄ + 2 O₂ → 1 CO₂ + 2 H₂O

d)

1 CH₄ + 2 O₂ → 2 CO₂ + 1 H₂O

46.

Balance the following chemical equation: ____HBr + ____Mg(OH)₂ → ____MgBr₂ + ____H₂O

a)

2 HBr + 1 Mg(OH)₂ → 1 MgBr₂ + 2 H₂O

b)

1 HBr + 2 Mg(OH)₂ → 2 MgBr₂ + 1 H₂O

c)

2 HBr + 2 Mg(OH)₂ → 1 MgBr₂ + 1 H₂O

d)

1 HBr + 1 Mg(OH)₂ → 2 MgBr₂ + 2 H₂O

47.

Complete and balance the following combustion reaction: ____C₈H₁₈ + ____O₂ →

a)

2 C₈H₁₈ + 25 O₂ → 16 CO₂ + 18 H₂O

b)

2 C₈H₁₈ + 18 O₂ → 8 CO₂ + 16 H₂O

c)

C₈H₁₈ + 12 O₂ → 8 CO₂ + 9 H₂O

d)

C₈H₁₈ + 8 O₂ → 8 CO + 9 H₂O

48.
A description of objects that can be measured and observed.
a)
gas
b)
mustangs
c)
physical properties
d)
melting point
49.

What does malleable mean?

a)

able to be flattened

b)

will break easily

c)

able to be pulled into a wire

d)

is shiny

50.

This is a correct dot diagram for nitrogen (N)

a)

true

b)

false

51.
Most elements will gain or lose electrons so that they end up with _______ valence electrons.
a)
2
b)
6
c)
8
d)
10
52.
How do positive ions form?
a)
by gaining electrons
b)
getting compliments
c)
by losing electrons
d)
gaining more protons
53.

Which of these is correct?

a)
b)
c)
54.

If I have 100 grams of reactants, how many grams of products should I have?

a)

0g

b)

100g

c)

50g

d)

75g

55.

The _______ are on the left side of the equation and the _______ are on the right.

a)

products; reactants

b)

reactants; solutions

c)

solvents; products

d)

reactants; products

56.

Choose the answer that shows this equation Balanced


N2 + O2 ----> N2O5

a)

3N2 + O2 ----> 3N2O5

b)

5N2 + 2O2 ----> 5N2O5

c)

2N2 + 5O2 ----> 2N2O5

d)

Cannot be balanced

57.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
58.
Name the part in red:

H2 + O2 -> H2O
a)
Coefficient
b)
Product
c)
Reactant
d)
Subscript
59.
What is the amplitude?
a)
length
b)
height
c)
# of waves
60.
Which is the wavelength?
a)
1
b)
2
c)
3
d)
4
61.
If the frequency gets higher, the wavelength gets 
a)
longer
b)
shorter
62.
If the wavelength gets longer, the frequency gets 
a)
higher
b)
lower
63.
The highest point on a wave is:
a)
the crest
b)
the trough
c)
the top
d)
the coast 
64.

Amplitude is the distance between

a)

the crest and the trough

b)

each wave

c)

the middle point of a wave and the clouds

d)

the crest or trough and the middle point of the wave

65.
How often a wave occurs is the wave's __________________
a)
crest
b)
frequency
c)
wavelength
d)
resting point
66.

True or False: Sound needs a medium to travel through

a)

True

b)

False

67.

Areas of increased pressure on a sound wave are known as a ----

a)

Rarefaction

b)

Compression

c)

Frequency

d)

Amplitude

68.

Which wave has the longest wavelegth?

a)

1

b)

2

c)

3

d)

they are all of the same

69.
Which wave in the diagram has the greatest wavelength?
a)
1
b)
2
c)
3
d)
4
70.
What do waves carry from place to place?
a)
Energy, but not matter or particles
b)
Energy and matter or particles
c)
Matter or particles but not energy
d)
Neither energy nor matter or particles

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