Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Atoms and elements revision

Total questions: 42

Worksheet time: 21mins

Name
Class
Date
1.
Can be found on the periodic table
a)
Element
b)
Compound
c)
MIxture
2.
Which of the following chemical formulas represents a compound? 
a)
C3
b)
O2
c)
CH3CHO
d)
H2
3.
What is krypton?
a)
element
b)
compound
c)
mixture
4.
What is gold?
a)
element
b)
compound
c)
mixture
5.
What is sugar?
a)
element
b)
compound
c)
mixture
6.
What is water?
a)
element
b)
compound
c)
mixture
7.
When two or more elements chemically combine
a)
element
b)
compound
c)
mixture
d)
solution
8.
Which statement best describes an element?
a)
made from mixture 
b)
thousands in the world
c)
pure, made of only one atom
d)
can be separated 
9.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a)
a gas at room temperature.
b)
made of two different elements.
c)
given off by green plants.
10.
The smallest particle of any particular type of matter is known by which of the following terms?
a)
Element
b)
Chemical
c)
Atom
d)
Substance
11.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
12.
Is the following an element or compound?
a)
element
b)
compound
13.
Is the following an element or compound?
a)
element
b)
compound
14.
Which of the following atomic symbols is written correctly?
a)
ee
b)
hE
c)
C
d)
CL
15.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
16.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
17.
What is the term for combining 2 or more atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
18.
What is the term for combining 2 or more DIFFERENT atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
19.
Are these molecules also compounds?
a)
YES
b)
NO
20.
Are these molecules also compounds?
a)
YES
b)
NO
21.

Metals are good conductor of

a)

Only heat

b)

Only electricity

c)

Heat and electricity both

d)

None of the above

22.

Which nonmetal is very essential for our life is

a)

Iodine

b)

Oxygen

c)

Nitrogen

d)

Chlorine

23.

How many atoms of sulfur are in each molecule of H2SO4?

a)

1

b)

4

c)

2

d)

7

24.

Alanine is an amino acid with formula C3H7NO2. How many atoms in all are in each molecule of alanine?

a)

3

b)

7

c)

12

d)

13

25.

How many atoms of carbon are in a molecule of vinyl chloride (C2H3Cl)?

a)

1

b)

3

c)

6

d)

2

26.

How many atoms of hydrogen are in a molecule of glucose (C6H12O6)?

a)

12

b)

6

c)

18

d)

4

27.

Which of the following statements accurately describes the number of atoms in a molecule of ammonia (NH3)?

a)

Three atoms of nitrogen and three atoms of hydrogen

b)

One atom of nitrogen and three atoms of hydrogen

c)

Three atoms of nitrogen and one atom of hydrogen

d)

One atom of nitrogen and one atom of hydrogen

28.

Which symbol shows a chemical reaction has occured?

a)

A

b)

B

c)

C

d)

D

29.

Identify the product(s) in this word equation

a)

Sodium

b)

Sodium chloride

c)

Sodium and Chlorine

d)

Sodium and sodium chloride

30.

In a word equation the REACTANTS

a)

Are written on the right hand side of the arrow

b)

Are produced in a chemical reaction

c)

Are always the same

d)

Are the substances that react together

31.

The products in this reaction are?

a)

Two solids

b)

One solid and one gas

c)

Three solids and a gas

d)

Two solids and a gas

32.

Magneisum reacts with oxygen to form magnesium oxide. The correct word equation is...

a)

A

b)

B

c)

C

d)

D

33.
What is electrolysis?
a)
breaking down of a compound using a current
b)
making a compound using a current
34.
What is the name given to the solution that is being electrolysed?
a)
Salt solution
b)
Electric solution
c)
Mineral solution
d)
Electrolyte
35.
Which non-metal is often used for electrodes?
a)
carbon
b)
copper
c)
zinc
d)
silicon dioxide
36.

The best test for oxygen is that

a)

it relights a glowing spling

b)

it relights a burning splint

c)

it changes lime water to milky

d)

it makes a glowing splint go out

37.
5. How do you test for Carbon Dioxide gas?
a)
a) Lime water goes milky/cloudy
b)
b) Relights a glowing splint
c)
c) Lighted splint gives a squeaky pop.
d)
d) Bleaches damp indicator paper.
38.
7. How do you test for Hydrogen gas?
a)
a) Lime water goes milky/cloudy
b)
b) Relights a glowing splint
c)
c) Lighted splint gives a squeaky pop.
d)
d) Bleaches damp indicator paper.
39.

What is the liquid part of the electrolysis set up called

a)

Electrolyte

b)

Electrode

c)

Electricity

d)

Electrolysis

40.

What property do electrodes need to have

a)

Be able to conduct electricity

b)

Be gaseous

c)

Be poor conductors

d)

Be magnetic

41.

What would molten potassium bromide break down into?

a)

Potassium and bromide

b)

Potassium and bromine

c)

Just potassium

d)

Just bromine

e)

Just bromide

42.

What would molten aluminium oxide breakdown into?

a)

Just aluminium

b)

Aluminium and oxide

c)

Just oxide

d)

Just oxygen

e)

Aluminium and oxygen

Similar Resources on Wayground

Chapter 10: Chemical Reactions

38 questions

Chapter 10: Chemical Reactions

quiz

Worksheet

•

KG - University

2nd Quarter Exam Review

40 questions

2nd Quarter Exam Review

quiz

Worksheet

•

KG - University

3rd Quarter Exam Review

40 questions

3rd Quarter Exam Review

quiz

Worksheet

•

KG - University

Chemical Bonding DHS

37 questions

Chemical Bonding DHS

quiz

Worksheet

•

KG - 11th Grade

Year 2 Science Semester 2

41 questions

Year 2 Science Semester 2

quiz

Worksheet

•

2nd Grade

Acids and Alkalis

40 questions

Acids and Alkalis

quiz

Worksheet

•

1st - 2nd Grade

Colours

39 questions

Colours

quiz

Worksheet

•

2nd Grade

8th Chemistry STAAR 2016

44 questions

8th Chemistry STAAR 2016

quiz

Worksheet

•

KG - University