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Year 8 - Chemistry Recap

Total questions: 72

Worksheet time: 36mins

Name
Class
Date
1.

All matter is made up of tiny _______________

a)

energy

b)

particles (atoms and molecules)

c)

bits

d)

antimatter

2.

The particles of ___________________ are tightly packed.

a)

solids

b)

liquids

c)

gases

d)

none

3.

The particles of liquids can:

a)

vibrate

b)

move past each other

c)

both

d)

none

4.

The forces of attraction between particles of _________ are weakest.

a)

solids

b)

liquids

c)

gases

d)

none

5.
Number 2 represents a ________
a)
solid
b)
liquid
c)
gas
d)
plasma
6.
As particles are exposed to warmer temperatures they __________
a)
speed up
b)
slow down
c)
stay the same
d)
vibrate
7.
As particles are exposed to colder temperatures they _____
a)
speed up
b)
slow down
c)
stay the same
d)
become ions
8.
An inflated balloon is placed in a refrigerator. Which statement describes the movement of the gas particles in the balloon?
a)
The particles move more slowly and become closer together.
b)
The particles move more slowly and become further apart.
c)
The particles move faster and become closer together.
d)
The particles move faster and become further apart. 
9.
What is the volume of the rock? The water level is displaced from 20 mL to 23 mL with the rock.
a)
3 mL
b)
23 mL
c)
20 mL
d)
43 mL
10.
Which liquid has the greatest density?
a)
lamp oil
b)
karo syrup
c)
water
d)
honey
11.
A student added sugar to a cup of water and stirred with a spoon.  After 10 minutes you could not see the sugar anymore.  What happened to the sugar?
a)
the sugar evaporated
b)
the sugar dissolved
c)
the sugar was magnetic
12.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
13.
What does the particle diagram show?
a)
solid
b)
liquid
c)
gas
d)
plasma
14.
What does the particle diagram show?
a)
solid
b)
liquid
c)
gas
d)
plasma
15.
What is the change of state from a gas to a liquid called?
a)
melting
b)
evaporation
c)
condensation
d)
sublimation
16.

Which of the following sentences are true about solids?

a)

Solids are rigid, have a fixed shape but not a fixed volume

b)

Solids are not rigid, have a fixed shape and no fixed volume

c)

Solids are rigid, have a fixed shape and a fixed volume

17.

Particles are always moving.

a)

True

b)

False

18.

Something that goes from liquid to gas is...

a)

Evaporation

b)

Melting

c)

Freezing

d)

Sublimation

19.

Which image shows particles in a solid?

a)
b)
c)
20.

Which image shows particles in a liquid?

a)
b)
c)
21.

Which image shows particles in a gas?

a)
b)
c)
22.
What is the change of state from a solid straight to a gas called?
a)
melting
b)
evaporating
c)
freezing
d)
sublimation
23.
What am I? I have a fixed mass, a fixed volume, I cannot be squashed and I have a shape that changes to fit the bottom of my container?
a)
solid
b)
liquid
c)
gas
d)
plasma
24.
a)

Solid

b)

Liquid

c)

Gass

25.

Particles always ________________ each other, this gets stronger as the particles get ___________________.

a)

attract, farther apart

b)

attract, closer together

c)

repel, farther apart

d)

repel, closer together

26.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
27.
My glass of ice water is sitting in the sun and has droplets of water on the outside of the glass. What is happening?
a)
condensation
b)
evaporation
c)
melting
d)
freezing
28.
Which form of matter does not take the shape of its container?
a)
liquid
b)
gas
c)
solid
d)
air
29.

It refers to the space that matter occupies.

a)

volume

b)

mass

c)

weight

d)

density

30.

It is the amount of matter in an object.

a)

volume

b)

mass

c)

weight

d)

density

31.

Which of the following determines an object’s ability to float in water?

a)

volume

b)

mass

c)

weight

d)

density

32.

Matter is

a)

Anything that has volume

b)

Anything that has mass

c)

Anything that has mass and volume

33.

What state of matter does the picture below represent?

a)

solid

b)

liquid

c)

gas

d)

plasma

34.

What is a Solid?

a)

Matter that has a fixed shape and size.

b)

Matter that has a fixed size and no fixed shape

c)

Matter that has no fixed shape or size

d)

Matter that has no fixed shape and size

35.

The state of matter that keeps its shape and volume when it is placed in a different container is called ______.

a)

gas

b)

liquid

c)

solid

36.

The state of matter that expands to fill its container is called ______.

a)

gas

b)

liquid

c)

solid

37.

What is matter made up of?

a)

particles that are too large to be seen

b)

tiny butter particles

c)

particles that are too small to be seen

d)

tiny water particles

38.

Which state of matter has its own shape

a)

Gas

b)

Solid

c)

LIquid

39.

The diagram shows arrangement of particles in a

a)

Solid

b)

Liquid

c)

Gas

40.

Define a liquid.

a)

Matter that has fixed shape but no fixed volume

b)

Matter that has fixed shape and fixed volume

c)

Matter that has fixed volume, but no fixed shape

41.

The measure of how much space something takes up is ______.

a)

matter

b)

mass

c)

volume

d)

density

42.

What is a gas?

a)

Matter that has fixed shape but no fixed volume

b)

Matter that has no fixed shape and no fixed volume

c)

Matter that has no fixed shape but fixed volume

d)

compounds

43.

What state is represented in the gif?

a)

Solid

b)

Liquid

c)

Gas

44.

The atomic mass is the

a)

number of protons and neutrons inside the nucleus

b)

number or electrons or protons

c)

number of protons, neutrons and electrons

45.

All matter is made of _________.

a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
46.
The positively charged particles of an atom are the ________.
a)
electrons
b)
protons
c)
neutrons
d)
protons & neutrons
47.

Identifies the number of protons in an atoms nucleus.

a)

Electron Cloud

b)

Atomic Theory

c)

Atomic Number

d)

Mass Number

48.

The negatively charged particles in an atom

a)

Proton

b)

Electron

c)

Neutron

d)

Electron Cloud

49.
An atom is made up of protons, neutrons, and electrons.  Which is the smallest subatomic particle?
a)
Proton
b)
Neutron
c)
Electron
d)
Idontknowatron
50.

The number of protons in an atom is called the .....

a)

Mass

b)

Atomic Number

c)

Nucleus

d)

Orbital

51.

The mass number of an atom is the mass of ______ + _____

a)

protons + neutrons

b)

protons + electrons

c)

neutrons + nucleus

d)

protons + nucleus

52.

What is the CHEMICAL SYMBOL in this element tile?

a)

10

b)

Ne

c)

Neon

d)

20.18

53.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
54.
a)
Periods
b)
Groups
55.
a)
Periods
b)
Groups
56.
What does the 6 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
57.
What does 12.011 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
58.

A subatomic particle that has a positive charge and that is found in the nucleus of an atom

a)

Proton

b)

elecrtron

c)

groups

d)

neutrons

59.

A subatomic particle that has a negative charge

a)

nobles gases

b)

protons

c)

electrons

d)

neutrons

60.
The number at the bottom of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
chemical symbol
d)
element name
61.

What is the number of electrons in sulfur?

a)

32

b)

16

c)

32.06

d)

6

62.

How many neutrons are in Phosphorous?

a)

15

b)

30.97

c)

16

d)

5

63.

The periodic table is arranged using which of the following characteristics?

a)

atomic number

b)

boiling point

c)

color

d)

oxidation state

64.

The atomic number of an atom refers to the ___________.

a)

number of electrons the atom will gain, lose or share

b)

sum jof protons and neutrons in its nucleus

c)

number of protons in the nucleus

d)

number of neutrons in the nucleus

65.

How many protons are in a nitrogen atom?

a)

5

b)

7

c)

14

d)

28

66.

In an atom, which subatomic particles are always equal?

a)

protons and electrons

b)

protons and neutrons

c)

neutrons and electrons

d)

protons, neutrons, and electrons

67.
The number at the bottom of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
chemical symbol
d)
element name
68.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
69.

From this element key of Nitrogen, determine the atomic mass of nitrogen

a)

7

b)

7.01

c)

14.01

d)

21.01

70.
How many protons, neutrons, and electrons are present in an atom of Cadmium, Cd, with a mass of 112 amu?
a)
48 protons, 112 neutrons, 64 electrons
b)
48 protons, 160 neutrons, 48 electrons
c)
48 protons, 64 neutrons, 48 electrons
71.

What is the element that has one more proton than tin (Sn)?

a)

antimony

b)

iodine

c)

lead

d)

indium

72.

How many total electrons to xenon atoms have?

a)

8

b)

54

c)

131

d)

132

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