wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Topic 1 Matter and Chemical Reactions Review

Total questions: 50

Worksheet time: 17mins

Name
Class
Date
1.

How many elements are in this chemical formula?

NaOH

a)

1

b)

2

c)

3

d)

4

2.

How many atoms of Carbon are in this formula? C6 H12O6C_{6\ }H_{12}O_6  

a)

6

b)

1

c)

12

3.

What is the total number of atoms in this chemical formula? C8H3NaBr12C_8H_3NaBr_{12}  

a)

18

b)

12

c)

25

d)

24

4.

Is this an element or a compound? CaSO4CaSO_4  

a)

Element

b)

Compound

5.
→2H2O
This number tells how many molecules are in a chemical equation.
a)
coefficient
b)
subscript
c)
compound
d)
element
6.
2H2O
How many H2O molecules are present?
a)
1
b)
4
c)
2
d)
8
7.
What chart should you reference to lookup information about elements?
a)
elemental map
b)
periodic table
c)
table of atoms
d)
none of the above
8.

How many Oxygen (O) atoms are in 4Mg(OH)2?

a)

4

b)

6

c)

8

d)

12

9.

How many Oxygen (O) atoms are in 6C6H12O6?

a)

6

b)

12

c)

72

d)

36

10.

How many Magnesium (Mg) atoms are in 4Mg(OH)2?

a)

4

b)

6

c)

8

d)

12

11.
Lemon juice is an example of  __________
a)
A base
b)
An acid
c)
A neutral substance
12.
What are properties of acids?
a)
Bitter, slippery, ph above 7
b)
Sour, reacts with metals, ph below 7
c)
Sour, reacts with metals, ph above 7
d)
Bitter, ph of 7, does not react with metals
13.
The pH of vinegar is 2.5.  Vinegar is a _____________.
a)
strong acid
b)
strong base
c)
weak base
d)
weak acid
14.

In this image, the symbol to the right of the arrow (in black) are called _______.

a)

Products

b)

Reactants

c)

Subscripts

d)

Coefficients

15.

What are the products?

NH3 -------> N2 + H2

a)

N2 + H2

b)

N2

c)

H2

d)

NH3

16.
What do you call the substances on the left side of a chemical equation?
a)
yield
b)
products
c)
reactants
d)
compounds
17.

What are the blue numbers called?

a)

oxidation numbers

b)

subscripts

c)

group numbers

d)

product numbers

18.

How many molecules of KNO3 are shown?

a)

1

b)

2

c)

3

d)

4

19.

Identify the Reactants in this equation.

a)

A

b)

B

20.
A molecule is smaller than an atom.
a)
True
b)
False
21.

What is this?

a)

Atoms of an element

b)

Mixture

c)

Compound

d)

Molecules

22.

What is this?

a)

Element

b)

Mixture

c)

Compound

d)

Molecules

23.

What is this?

a)

Mixture

b)

Compounds

c)

Element

d)

Mixture

24.

What is this?

a)

Mixture

b)

Compounds

c)

Molecule

d)

Mixture

25.

What are these?

a)

Molecules of compounds

b)

Elements

c)

An atom

d)

Mixture

26.

What are these?

a)

Compound

b)

Elements

c)

An atom

d)

Mixture

27.

This is a

a)

Pure Substance

b)

Molecule

c)

Compound

d)

Mixture

28.

This is

a)

an atom.

b)

a molecule of a compound.

c)

an element.

d)

a mixture.

29.

Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)

a)
b)
c)
d)
30.

Solutions are ___________ mixtures.

a)

Solid

b)

Homogenous

c)

Heterogeneous

d)

Gas

31.
What are the two types of Mixtures
a)
Elements and Subatomic Particles
b)
Protons and Electrons
c)
Atoms and Compounds
d)
Homogenous and Heterogeneous
32.

What type of mixture does this diagram represent?

a)

Homogeneous

b)

Heterogeneous

33.
What type of mixture is this?
a)
homogenous mixture
b)
chemical
c)
heterogeneous mixture 
d)
solid mix
34.

A mixture that contains two or more substances uniformly combined

a)

heterogeneous mixture

b)

homogeneous mixture

c)

suspension

d)

colloid

35.

This picture is a model of a...

a)

element

b)

compound

c)

homogeneous mixture

d)

heterogeneous mixture

36.
Classify the picture with the correct label.
a)
Mixture of Compounds
b)
Mixture of Elements
c)
Compound
d)
Mixture of Elements & Compounds
37.

This diagram represents...

a)

An element

b)

A molecule

c)

A compound

d)

A mixture of elements and compounds

38.

Surface tension is the property of water in which...

a)

water molecules at the surface tend to stick together.

b)

water spills easily.

c)

water tends to be see-through.

39.

Describe COHESION.

a)

Water molecules attracted to other substances.

b)

Water molecules climbing upwards against the force of gravity.

c)

Water molecules dissolving many substances because of its polarity.

d)

Water molecules attracted to other water molecules.

40.
tendency of molecules of the same kind to stick to one another
a)
cohesion
b)
adhesion
c)
solution
d)
polar molecule
41.
What is adhesion?
a)
Water's ability to stick to itself
b)
Water's ability to stick to other substances
c)
The strength of the cohesion of all the water molecules combined
d)
Tape, glue and other adhesives
42.

Water's ability to stick to glass is

a)

adhesion

b)

cohesion

c)

surface tention

d)

capillary action

43.
The tightness across the surface of water that enables paper clips to float is ____________.
a)
adhesion
b)
capillary action
c)
surface tension
d)
polarity
44.

Refer to the picture; this is occurring because of:

a)

Cohesion

b)

Adhesion

c)

Capillary action

d)

Surface tension

45.

What term describes the attraction between molecules of different substances?

a)

Cohesion

b)

Adhesion

c)

Surface tension

d)

Capillary action

46.

Explain how surface tension makes it possible for small insects, such as water striders, to walk on water.

a)

Surface tension creates a solid surface

b)

Surface tension reduces the weight of the insect

c)

Surface tension allows the insect to float

d)

Surface tension creates a film on the water surface

47.

Which of the following is responsible for water molecules sticking together to form droplets?

a)

A. Cohesion

b)

B. Adhesion

c)

C. Surface Tension

d)

D. Magnetism

48.
Bleach is a strong base, what is the pH level of bleach?
a)
13
b)
14
c)
1
d)
2
49.
Which is most acidic?
a)
Baking Soda
b)
Lemon Juice
c)
Black Coffee
d)
Milk
50.

Weak acids found in living things are called:

a)

organic acid

b)

mineral acid

c)

concentrated acid

d)

carbonic acid

Similar Resources on Wayground

G8 Assembly KWA JUNE 1

47 questions

G8 Assembly KWA JUNE 1

quiz

Worksheet

•

8th Grade

Forces and Motion

53 questions

Forces and Motion

quiz

Worksheet

•

8th Grade

Final Semester Exam 2019

45 questions

Final Semester Exam 2019

quiz

Worksheet

•

8th Grade

Tata Tulis Laporan

50 questions

Tata Tulis Laporan

quiz

Worksheet

•

1st - 10th Grade

NSCAS-Heredity Review

45 questions

NSCAS-Heredity Review

quiz

Worksheet

•

8th Grade

Module 1: Earth and Space

50 questions

Module 1: Earth and Space

quiz

Worksheet

•

7th - 10th Grade

Chapter 10, 11 and 12 Review

45 questions

Chapter 10, 11 and 12 Review

quiz

Worksheet

•

6th - 8th Grade

Y9 Chemistry revision

50 questions

Y9 Chemistry revision

quiz

Worksheet

•

8th - 10th Grade