wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

final revision g 8 q 3

Total questions: 100

Worksheet time: 1hrs 26mins

Name
Class
Date
1.

What kind of matter is soil?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

2.

What kind of matter is salt (NaCl)?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

3.

What kind of matter is milk?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

4.

A physical blend of 2 or more components not bonded together is called a ____.

a)

type of element

b)

mixture

c)

chemical reaction

d)

physical property

5.

A mixture in which the composition is unevenly mixed is ...........

a)

Heterogeneous

b)

Homogeneous

6.

What type of substance is gold ?

a)

compound

b)

heterogeneous mixture

c)

homogeneous mixture

d)

element

7.
If a mixture has components you can see it is a...
a)
solution
b)
compound
c)
homogeneous mixture
d)
heterogeneous mixture
8.

two or more types of atoms bonded together?

a)
atoms
b)
elements
c)
molecules
d)
compounds
9.
Matter is a composition that is always the same is...
a)
Mixture
b)
Atom
c)
Matter
d)
Substance
10.
Salt dissolved in water.
a)
colloid
b)
solution
c)
element
d)
compound
11.

The center of an atom is the nucleus. The nucleus is made up of:

a)

Protons and Electrons

b)

Protons and Neutrons

c)

Eggs and Bacon

d)

Protons and Atoms

12.
A proton is a particle that has a  _________ charge.
a)
Positive
b)
Negative
c)
Neutral
d)
All of these
13.

A neutron is a particle in the atom that has a __________ charge.

a)

Neutral/No charge

b)

Negative

c)

Positive

d)

All of these

14.

If salt is mixed in a glass of water, what is the water called?

a)

solute

b)

solution

c)

solvent

d)

element

15.
Substance that dissolves in a solvent.
a)
solute
b)
solvent
c)
solution
d)
concentration
16.

What do we used to represent the elements and ratio of atoms in a compound?

a)

chemical bond

b)

element

c)

chemical formula

d)

compound

17.
how many atoms are in a single molecule of Fe2O3?
a)
2
b)
3
c)
5
d)
6
18.

Air is an example of...

a)

a homogenous mixture

b)

a heterogenous mixure

c)

a single compound

d)

compound

19.
an atom with atomic number 6 would have how many protons 
a)
6
b)
12
c)
3
d)
cannot be determined 
20.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
21.
What type of changes or processes cause the chemical composition of substances to change into new substances?
a)
Physical
b)
Chemical
22.
Identify the following process: When we crack an egg.
a)
Physical change
b)
Chemical change
23.
Identify the following process: When we fry an egg.
a)
Physical change
b)
Chemical change
24.
If a solid piece of chocolate is melted and changed to liquid form. Which property of the piece of chocolate will remain the same?
a)
Texture
b)
Temperature
c)
Shape
d)
 Mass
25.
A change in the size, shape, or state of matter.
a)
chemical change
b)
physical change
c)
chemical reaction
d)
electron change
26.
Physical changes can be brought about by
a)
Cutting
b)
Bending
c)
Dissolving
d)
All of the following are correct.
27.
When a gas forms directly from a solid, skipping the liquid phase. it is called
a)
deposition
b)
sublimation
c)
evaporation
d)
condensation
28.
When you add heat to a liquid, turning it to gas, the process is called
a)
vaporization
b)
sublimation
c)
condensation
d)
deposition
29.
Adding more heat energy to particles of matter will
a)
make them move slower
b)
make them move faster
c)
make them stop moving
d)
destroy them
30.
In which state of matter are particles moving the slowest?
a)
solid
b)
liquid
c)
gas
d)
gummy bears
31.
What is the opposite of melting?
a)
condensation
b)
evaporation
c)
freezing
d)
sublimation
32.
How do you make matter change state?
a)
Add energy to it
b)
Take energy away from it
c)
Both of these
33.
The change in state from gas directly to solid (skipping liquid) is called 
a)
deposition
b)
sublimation
c)
condensation
d)
evacuation
34.
A change in phase ...
a)
Chemical Change
b)
Physical Change
35.

Which of the following could indicate that a chemical change took place?

a)

Change in color

b)

Production of Energy

c)

Formation of Gas

d)

All are correct

36.

During Chemical Reactions, the new substances created are called?

a)

Precipitate

b)

Corrosion

c)

Reactants

d)

Products

37.

During Chemical Reactions, the substances that are used are called?

a)

Precipitate

b)

Corrosion

c)

Reactants

d)

Products

38.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
39.
All of the following processes cause physical changes in matter except
a)

burning.

b)

melting.

c)

freezing.

d)

boiling.

40.
Ability of one substance to dissolve in another. 
a)

malleability

b)
Solubility 
c)
Melting Point
d)

conductivity

41.
The temperature at which a substance changes from a solid to a liquid.
a)
Boiling Point
b)
Freezing Point
c)
Melting Point
d)

melting process

42.
Which of the following property of metal can reflect light
a)
A. malleability
b)

B. conductivity

c)
C. ductility
d)
D. luster
43.
What element in Group 1 is not a metal but a nonmetal?
a)
Helium
b)
Lithium
c)
Hydrogen
d)
Oxygen
44.
Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 
a)
Metal
b)
Nonmetal
c)
Metalloid
d)
Pretty
45.
a)
Metals
b)
Nonmetals
c)
Metalloids
46.
a)
Metals
b)
Nonmetals
c)
Metalloids
47.
a)
Metals
b)
Nonmetals
c)
Metalloids
48.

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

a)

7

b)

7.01

c)

14.01

d)

21.01

49.

the smallest unit of an element that maintains the properties of the element.

a)

atom

b)

neutron

c)

electron

d)

atomic number

50.

the law that states that the repeating chemical and physical properties of elements change periodically with the atomic numbers of the elements.

a)

periodic law

b)

nonperiodic

c)

alkaline-earth metal

d)

alkali metal

51.

Mendeleev arranged the elements by

a)

density

b)

melting point.

c)

appearance

d)

increasing atomic mass.

52.

How do the physical and chemical properties of the elements change?

a)

periodically within a group

b)

periodically across each period

c)

periodically within a family

d)

periodically across each group

53.

The letter C is carbon’s

a)

atomic number.

b)

atomic mass.

c)

chemical symbol.

d)

element name.

54.

A characteristic that can be observed or measured such as color, state, or hardness is referred to as a...

a)

Physical property

b)

Chemical property

c)

Physical change

d)

Chemical change

55.

What happens to a solid object with a density that is less than water when it is placed in water?

a)

The object sinks about halfway into the water.

b)

The object displaces a quantity of water greater than its volume.

c)

The object settles to the bottom of the water.

d)

The object floats on top of the water.

56.

When the temperature of matter increases the particles (usually)...

a)

speed up and move closer

b)

speed up and move farther apart

c)

slow down and move closer together

d)

slow down and move farther apart

57.
When the temperature of matter decreases the particles ...
a)
speed up and move farther apart
b)
speed up and move closer together
c)
slow down and move farther apart
d)
slow down and move closer together
58.
Which physical property is the amount of space something takes up and can be measured with a graduated cylinder?
a)
conductivity
b)
relative density
c)
thermal energy
d)
volume
59.
Pull of gravity on an object:
a)
Gravity
b)
mass
c)
weight
d)
volumer
60.
An attractive force for some metals.
a)
Conductivity
b)
Solubility
c)
Magnetism
d)
Mass 
61.
Which physical property will change if you visit the moon?
a)
mass
b)
volume
c)
density
d)
weight
62.
Using these tools, which physical property could someone find out more about?
a)
Thermal Conductivity
b)
Electrical Conductivity
c)
Relative Density
d)
Solubility
63.

When physical properties change when the size of an object changes or example volume or mass

a)

Size Dependent

b)

Size Independent

c)

physical change

d)

Density

64.

When physical properties do not change when the size of an object changes. Examples, color, taste, state of matter

a)

chemical changes

b)

dependent properties

c)

size independent properties

65.
What is mass?
a)
how much space something takes up
b)
the amount of matter in an object
c)
a synonym for weight
d)
how much density an object has
66.
Which of the following units would be BEST to use to measure volume in science?
a)
liters (L)
b)
gallons (gal)
c)
pints 
d)
quarts (qts)
67.

Which of the following units would be BEST to use to measure mass ?

a)
grams (g)
b)
stone
c)
pounds (lbs.)
d)
ounces (oz.)
68.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
69.
Volume is _________.
a)
how much matter is in an object
b)
how much space an object takes up
c)
how much something weighs
d)
how many atoms
70.
I have two objects with the same volume but different masses.  Which object will be more dense?
a)
The object with less weight.
b)
The object with more weight.
c)
The object with more mass.
d)
The object with less mass.
71.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
72.
What type of substance is this?
a)
homogeneous mixture
b)
heterogeneous mixture
c)
element
d)
compound
73.
What type of a substance is this?
a)
homogeneous mixture
b)
heterogeneous mixture
c)
element
d)
compound
74.

Water evaporation is evidence that a ______________ has taken place.

a)
physical property
b)
chemical property
c)
physical change
d)
chemical change
75.
The formation of gas bubbles is evidence that a _________________ has taken place.
a)
physical property
b)
chemical property
c)
physical change
d)
chemical change
76.
Thermal energy (heat) being released or absorbed during a reaction is evidence that a _______________ has taken place.
a)
physical property
b)
chemical property
c)
physical change
d)
chemical change
77.

In the diagram, atoms in molecules break apart and rejoin to form different molecules. This is an example of a

a)

physical property of matter

b)

physical change in matter

c)

chemical property of matter

d)

chemical change in matter

78.
Which is an example of a physical property?
a)
ability to react with acid
b)
 state of matter
c)
flammability
d)
ability to react with oxygen
79.
What kind of properties can only be observed when a substance changes into a different substance?
a)
physical properties
b)
chemical properties
c)
liquid properties
d)
real properties
80.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
81.
How many total atoms are in the compound C2H8O ?
a)
11
b)
2
c)
8
d)
1
82.
How many Sodium (Na) are in 6NaCl?
a)
1
b)
12
c)
6
83.

What are the products of the chemical reaction pictured?

a)

CH4 and CO2

b)

CH4 and O2

c)

CO2 and H2O

d)

O2 and H2O

84.
Consider the chemical equation CH4 + 2 O2 → CO2 + 2 H2O. In this equation, CH4 is a
a)
product
b)
reactant
c)
displacement
85.
An oreo cookie weighs 20 grams.  It gets crushed into crumbs for a recipe.  How much do its crumbs weigh?
a)
15 grams
b)
25 grams
c)
20 grams
86.
Which of the following situations is evidence of chemical change? 
a)
Boiling water produces steam
b)
Adding vinegar to baking soda makes foaming bubbles
c)
Sharpening a pencil
d)
Cutting paper
87.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
88.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
89.

balance the chemical equation... Al + O2 --> Al2O3

a)

.....................................

b)

...............................

c)

...................................

d)

................................... 

90.

Balance this equation. Na + Cl2 --> NaCl

a)

.............................

b)

.................................

c)

......................................

d)

....................................

91.

Balance this equation Mg + O2 --> MgO

a)

.........................

b)

.......................

c)

...........................

d)

............................

92.
Rate of chemical reaction means
a)
amount of product formed
b)
speed of reaction
c)
concentration of reacting particles
d)
combining reactants with products
93.
Grinding a seltzer tablet into powder increases the rate of reaction due to increased
a)
concentration
b)
surface area
c)
temperature
d)
reactants
94.

More collisions correspond to a:

a)

Faster reaction rate

b)

Slower reaction rate

c)

Constant reaction rate

95.
The rate of a chemical reaction is NOT affected by which of the following:
a)
temperature
b)
concentration
c)
particle size (surface area)
d)
All of these affect reaction rates
96.
The rate of a reaction increases as temperature__________________.
a)
Decreases
b)
Increases
c)
Stays the Same
97.
Products will form faster if____________
a)
the particle size of the reactants are larger.
b)
temperature is decreased.
c)
concentration of the reactants are increased.
d)
the reaction is not stirred.
98.
Balance this equation,            
Al2O3 --> Al + O2 
a)
Cannot be balanced
b)
2Al2O3 --> 2Al+3O2 
c)
2Al2O3--> 4Al+3O2 
d)
3Al2O3--> 2Al+O2 
99.
This appears on the left side of a chemical formula, and represents how many molecules there are.
a)
an atom
b)
the subscript
c)
a molecule
d)
the coefficient
100.
How many hydrogen atoms are in this chemical formula?
a)
4 hydrogen atoms
b)
1 hydrogen atom
c)
2 hydrogen atoms
d)
3 hydrogen atoms

Similar Resources on Wayground

Fall Semester 8th Grade Science Review

104 questions

Fall Semester 8th Grade Science Review

quiz

Worksheet

•

8th Grade

8th Grade BM 2 Study guide

100 questions

8th Grade BM 2 Study guide

quiz

Worksheet

•

8th Grade

Matter

98 questions

Matter

quiz

Worksheet

•

7th - 9th Grade

100 soalan sains tingkatan 2

100 questions

100 soalan sains tingkatan 2

quiz

Worksheet

•

1st - 12th Grade

Earth's Layers, Minerals, and Rocks

100 questions

Earth's Layers, Minerals, and Rocks

quiz

Worksheet

•

8th Grade

Semester 1 Final Practice Test

100 questions

Semester 1 Final Practice Test

quiz

Worksheet

•

8th Grade - University

Periodic Table and Trend

100 questions

Periodic Table and Trend

quiz

Worksheet

•

8th Grade

Science 8 OST Review

98 questions

Science 8 OST Review

quiz

Worksheet

•

8th Grade