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Middle School Chemistry (ACS) Chapters 1-4 Review

Total questions: 75

Worksheet time: 38mins

Name
Class
Date
1.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
2.
All matter is made of 
a)
energy 
b)
atoms 
c)
air
d)
chemistry
3.
the smallest particle of matter
a)
atom
b)
element
c)
molecule
d)
compound
4.
What happens to particles when heat is removed from them?
a)
They speed up and spread out
b)
They slow down and get closer together
c)
They stop moving
d)
They move closer together and speed up
5.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
6.
state of matter that has a fixed volume and a fixed shape
a)
solid
b)
liquid
c)
gas
d)
phases of matter
7.
What phase of matter is shown in the diagram? (It is a regular pattern and the particles are locked in place.)
a)
solid
b)
liquid
c)
gas
d)
physical changes
8.
What phase of matter is shown in the diagram? (The particles are close to each other but move around freely.)
a)
solid
b)
liquid
c)
gas
d)
physical change
9.
What phase of matter is shown in the diagram? (The particles are far apart and have lots of energy.)
a)
solid
b)
liquid
c)
gas
d)
phase change
10.
state of matter that has a fixed volume BUT changes it's shape to fit the container
a)
solid
b)
liquid
c)
gas
d)
phases of matter
11.
Gas particles have the ________ kinetic energy because they move the fastest.
a)
least
b)
most
12.
Change from gas to liquid...
a)
condensation
b)
evaporation
c)
expansion
d)
movement
13.
Change from Liquid to Solid is called:
a)
fusion
b)
Freezing
c)
sublimation
d)
evaporation
14.
change from liquid to gas is called....
a)
expansion
b)
evaporation
c)
condensation
d)
sublimation
15.
The weatherman says it is going to be 20 degrees today, which will be nice and warm.  Which scale is he probably using?
a)
Fahrenheit
b)
Celsius
c)
Kelvin
d)
Richter
16.
In the process of conduction
a)
Fast-moving particles get larger
b)
Slow-moving particles get smaller
c)
Fast-moving particles transfer energy to slower-moving particles
d)
Slow-moving particles transfer energy to faster-moving particles
17.
A water molecule is made up of
a)
One oxygen atom and two hydrogen atoms
b)
One hydrogen atom and two oxygen atoms
c)
Many different molecules of oxygen
d)
Two hydrogen atoms and two oxygen atoms
18.
Water molecules attract each other because there is an attraction between
a)
The oxygen atoms from different water molecules
b)
The oxygen of one water molecule and the hydrogen of another
c)
The hydrogen atoms from different water molecules
d)
The nucleus of two water molecules 
19.
When water evaporates
a)
Water molecules separate into one oxygen atom and two individual hydrogen atoms
b)
The motion of water molecules causes them to stay in the liquid
c)
The motion of water molecules causes them to leave the liquid and become a gas
d)
The water increases in mass
20.
Hot water evaporates faster than room temperature water. This is mainly because:
a)
Molecules of hot water are lighter
b)
More water molecules move fast enough to break away from other water molecules
c)
Room temperature water has more mass
d)
The molecules in room temperature water are moving faster
21.
When water vapor condenses
a)
Water vapor changes from a liquid to a gas
b)
One oxygen and two hydrogen atoms join to form a water molecule
c)
Water vapor changes from a gas to a liquid
d)
The water molecules spread further apart
22.
Cooling water vapor makes it condense faster because
a)
Cooling the vapor causes the molecules to get further apart
b)
The molecules slow down and their attractions bring them closer together
c)
Colder temperatures speeds up the molecules
d)
) Water vapor is less dense than liquid water
23.
When water freezes, liquid water turns to solid ice mainly because
a)
The water molecules get harder
b)
The molecules move slowly enough that their attractions keep them in fixed positions
c)
All liquid water eventually becomes ice
d)
Ice can float on water
24.
Different liquids have different freezing points mainly because
a)
Freezers are at different temperatures
b)
Some winters are colder than others
c)
The less liquid you use, the faster it freezes
d)
Molecules of different liquids have a different amount of attraction 
25.
In the process of conduction
a)
Energy is transferred from a lower temperature substance to a higher temperature substance
b)
Energy is transferred from a higher temperature substance to a lower temperature substance
c)
The amount of energy is increased
d)
Both substances get hotter
26.
Ice melts to become liquid water mainly because
a)
The water molecules move fast enough to break out of their fixed positions
b)
Water molecules slow down so much that they melt
c)
Water molecules react with oxygen to produce melting
d)
Ice is less dense than water
27.
If you compare ice and liquid water on the molecular level, you could say that
a)
The molecules in liquid water are closer together
b)
The molecules in ice are closer together
c)
The molecules in ice slide past each other
d)
The molecules in liquid water are smaller
28.
True or false? When fast-moving atoms or molecules hit slower-moving atoms or molecules and increase their speed, energy is transferred. The energy that is transferred is called heat.
a)
True
b)
False
29.
True or false? Adding energy has no effect on the rate of evaporation. 
a)
True
b)
False
30.
True or false? Condensation is the process in which molecules of a gas spread very far apart. 
a)
True
b)
False
31.
True or false? Making water vapor colder increases the rate of condensation. 
a)
True
b)
False
32.
True or false? The molecules in liquid water are closer together than they are in ice. 
a)
True
b)
False
33.
When water molecules in the air slow down so much that their attractions overcome their speed, they join together forming liquid water. This is a description of:
a)
evaporation
b)
condensation
c)
sublimation
d)
deposition
34.
True or false? Dry ice can change directly from a solid to a gas. 
a)
True
b)
False
35.
True or false? The process of changing to a gas from a solid is called sublimation. 
a)
True
b)
False
36.
When water molecules speed up so much that they their speed overcomes their attractions, they break away from other water molecules and become water vapor.  This is a description of:
a)
evaporation
b)
condensation
c)
sublimation
d)
deposition
37.
Which phase of matter does this image of water molecules represent?
a)
solid
b)
liquid
c)
gas
38.
Which phase of matter does this image of water molecules represent?
a)
solid
b)
liquid
c)
gas
39.

1. The density of an object is

a)

The mass divided by the volume D=m/v

b)

The volume divided by the mass D=v/m

c)

The same as its weight

d)

The same as the size of the object

40.

If two objects have the same volume but one has a greater mass, the one with greater mass

a)

has a lower density

b)

has a higher density

c)

will float

d)

sill sink

41.

If two objects have the same volume but one is made up of smaller and heavier atoms, the one with the small heavy atoms will

a)

be larger than the other

b)

be less dense than the other

c)

be more dense than the other

d)

float

42.

If you cut a wooden block in half, each half would have

a)

half the density of the original piece

b)

twice the density of the original piece

c)

The same density as the original piece

d)

No density at all

43.

5. In the water displacement method for finding volume

a)

You subtract the final volume from the initial volume

b)

You subtract the initial volume from the final volume

c)

You add the initial and final volumes

d)

You divide the final volume by 2

44.

If two objects have the same mass but different volumes

a)

the one with the larger volume has the lower density

b)

they must have the same density

c)

the one with the larger volume has the higher density

d)

the one with the larger volume is twice as dense

45.

The mass of atoms, their size, and how they are arranged determine the __________ of a substance

a)

volume

b)

matter

c)

density

d)

weight

46.

True or False: A submerged object displaces a volume of liquid equal to the volume of the object.

a)

True

b)

False

47.

What is the volume of an object that made the water level rise in a graduated cylinder from 20mL to 32mL? (cm3=cubic centimeters)

a)

2 cm3

b)

12g

c)

12 cm3

d)

52cm3

48.

An unknown sample has a mass of 22g. When placed in a graduated cylinder, the water level rose from 30 mL to 45mL. What is the density of the unknown sample? (round your answer to the nearest tenth)

a)

0.7g/cm3

b)

15.0ml

c)

1.5g/cm3

d)

1.4g/cm3

49.

Determine the volume of the cube shown here.

a)

168 cm

b)

168 cm3

c)

17 cm

d)

17 cm3

50.

Which of the following affect the density of a substance? (check all that apply)

a)

mass of atoms

b)

arrangement of atoms

c)

size of atoms

d)

size of the sample of the substance

51.

Protons are located in the nucleus of the atom. A proton has

a)

no charge

b)

a positive charge

c)

a negative charge

d)

a positive and a negative charge

52.

Neutrons are located in the nucleus of the atom. A neutron has

a)

no charge

b)

a positive charge

c)

a negative charge

d)

a positive and a negative charge

53.

An electron is in a region outside the nucleus. An electron

a)

is larger than a proton and has no charge

b)

has less mass than a proton and has a negative charge

c)

is smaller than a proton and has no charge

d)

has a positive charge

54.

True or False: Neutrons and electrons are attracted to one another.

a)

True

b)

False

55.

A hydrogen atom is made up of one proton and one electron. The proton and electron stay near each other because

a)

positive and negative charges repel

b)

positive and positive charges repel

c)

positive and negative charges attract

d)

two negatives make a positive

56.

The atoms of the same element can have different isotopes. An isotope of an atom

a)

is an atom with a different number of protons

b)

is an atom with a different number of neutrons

c)

is an atom with a different number of electrons

d)

has a different atomic number

57.

An element and an atom are different but related because

a)

A particular element is made up of many different types of atoms

b)

A molecule is the same as an atom

c)

An element is made up of all the same type of atom

d)

An element is smaller than an atom

58.

Electrons are in regions around the nucleus called energy levels. The first energy level

a)

Is furthest from the nucleus

b)

is closest to the nucleus

c)

holds the most electrons

d)

needs more than two electrons to fill it up

59.

Neon has 10 protons and 10 electrons. The electrons fill the energy levels in Neon like this:

a)

2 in the first, 2 in the second, and 6 in the third

b)

4 in the first, 4 in the second, and 2 in the third

c)

2 in the first, 4 in the second, and 4 in the third

d)

2 in the first, and 8 in the second

60.

The atoms in a column (group) of the periodic table all have

a)

The same abbreviation

b)

The same number of energy levels

c)

The same number of electrons

d)

The same number of electrons in the outer energy level

61.

True or False: Energy levels are also referred to as shells

a)

true

b)

false

62.

In the process of covalent bonding, atoms share electrons. This means that

a)

Electrons from each atom are attracted to the nucleus of both atoms

b)

Protons and neutrons attract

c)

Atoms lose electrons and become ions

d)

Atoms gain electrons and become ions

63.
a)

Both atoms gain electrons

b)

One atom gains one or more electrons and the other loses the same number

c)

Atoms switch protons

d)

Both atoms lose electrons

64.

In the process of ionic bonding, ions come together because

a)

Opposite charges repel

b)

Positive and negative ions attract

c)

Salt is magnetic

d)

Like charges attract each other

65.

True or False: In a covalent bond, electrons are shared between two atoms

a)

True

b)

False

66.

True or False: In an ionic bond, electrons are shared between two atoms

a)

True

b)

False

67.

True or False: It is not possible to have a double covalent bond

a)

True

b)

False

68.

True or False: Chemical Bonds do NOT change the properties of the new substance formed.

a)

True

b)

False

69.

When an atom loses an electron, it forms a _____ ion.

a)

positive

b)

negative

c)

neutral

70.

When an atom gains an electron, it forms a _______ ion.

a)

positive

b)

negative

c)

neutral

71.

An inert atom _________. (Select all that apply)

a)

resists bonding

b)

is stable

c)

typically has 8 electrons in outer energy level

d)

is highly reactive

72.

The atomic mass of an element is

a)

The average mass of all the isotopes of the element

b)

A measure of the density of that element

c)

The mass of the most common isotope of that element

d)

The number of protons and electrons in the atoms of the element

73.

The atomic number of an atom is

a)

the mass of the atom

b)

the number of protons added to the number of neutrons

c)

the number of protons

d)

negatively charged

74.

The periodic table shows that a carbon atom has six protons. This means that a carbon atom also has

a)

six electrons

b)

six neutrons

c)

more protons than electrons

d)

an atomic mass that equals six

75.

The atomic number of nitrogen is 7. The atomic mass is 14.01. That means that

a)

All nitrogen atoms have exactly 7 neutrons

b)

A small percentage of nitrogen atoms have fewer than 7 neutrons

c)

A small percentage of nitrogen atoms have more than 7 neutrons

d)

Some nitrogen atoms have fewer than 7 electrons.

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