wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

CLASS 7 SCIENCE

Total questions: 30

Worksheet time: 15mins

Name
Class
Date
1.

He

Based on this symbol, what can you tell about Helium (He)?

a)

Helium is a compound

b)

Helium is an element

c)

helium is a metal

d)

helium is a mixture

2.

H2O

How many types of elements are in this compound?

a)

1

b)

2

c)

3

d)

4

3.

Which combination of letters can be used as a chemical symbol for an element?

a)

NP

b)

Pks

c)

Cl

d)

FeOB

4.

Water ( H2O) is a compound because-

a)

it is made of two different elements

b)

useful to humans

c)

a gas at room temperature

d)

given off by plants

5.

Which contains only CHEMICAL changes (new substance formed or cannot be undone)?

a)

Silver spoon tarnish

Leaves change color

Water separating into hydrogen and oxygen

b)

Ice melting

Sugar Cube dissolving

Paper tearing

c)

Dry ice goes from solid to liquid

Your breath condensing on a window

Glass breaking

d)

Mixing flour, salt, and sugar

Sanding wood

Grinding something into powder

6.

Which list contains only elements and a reason why they are elements?

a)

H2O, NaCl, N2, CO2, Substances are elements because they they contain more than one chemical symbol.

b)

Kr, Ne, Ar, He, Substances are elements because they are noble gases.

c)

Cl2, H2, Na, He, Substances are elements because they are pure.

d)

F2, O2, Li, H, Substances are elements because they all have chemical symbols.

7.

Carbon (C) is considered an element while Carbon Dioxide (CO2) is considered a compound. That is because Carbon Dioxide is -

a)

a gas

b)

made of two elements

c)

given off by plants

d)

useful to us

8.

Rust & Tarnishing is ALWAYS and example of a chemical change/reaction?

a)

True

b)

False

9.
A molecule is
a)
two or more atoms bonded together
b)
one type of atom
c)
smaller than an atom 
d)
an element
10.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
11.

Complete the analogy:


______________: pure substances; solution:mixtures

a)

solvent

b)

compound

c)

physical

d)

solute

12.

How Would You Separate A Mixture Of Oil In Water?

a)

Decantation

b)

Magnetic Separation

c)

Evaporation

d)

Distillation

13.

How Would You Separate A Mixture Of Salt In Water? (Please Select Two Options)

a)

Filtration

b)

Chromatography

c)

Evaporation

d)

Crystallisation

14.

How Would You Separate A Mixture Of Iron Filings And Sand?

a)

Handpicking

b)

Decanting

c)

Magnetic Separation

d)

Chromatography

15.

A “Solid” Is Also Known As...

a)

Solvent

b)

Liquid

c)

Solute

d)

Solution

16.
Which of the following groups of vertebrates is warm-blooded?
a)
Birds
b)
Fish
c)
Amphibians
d)
Reptiles
17.
True or False: Reptiles have wet skin. 
a)
True
b)
False
18.
What of the following animals is a type of mammal?
a)
Bear
b)
Penguin
c)
Frog
d)
Alligator
19.
My body is warm, I have fur, feed my young on milk, and have live births.  What am I?
a)
Reptile
b)
Bird
c)
Mammal
d)
Fish
20.
What are vertebrates?
a)
Animals with a backbone
b)
Animals without a backbone
21.
A wheelbarrow is an example of
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
d)
Fourth Class Lever
22.
In third class levers, the ______ is in the middle. 
a)
Effort
b)
Fulcrum
c)
Load
23.
Which of the following does a simple machine NOT do?
a)
Increase the force applied
b)
Increase the distance the force is applied over
c)
Change the direction the force is applied
d)
Change the amount of work that needs to be done
24.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
25.

In order to lift an object heavier than yourself using a lever, you need to move the fulcrum...

a)

closer to the effort

b)

closer to the load

c)

to the middle

26.

A block and tackle pulley system combines BOTH a fixed and movable pulley.

a)

true

b)

false

27.

The S.I unit of speed is

a)

meter per second

b)

kilometer per second

c)

both

28.
The combination of different forces acting on an object at the same time.
a)
Net force
b)
Balanced force
c)
Equilibrium
d)
Unbalanced force
29.
A farmer has a bale of hay with a mass of 36 kilograms. How many grams of hay are in the bale?
a)
36,000 grams
b)
360 grams
c)
0.36 grams
d)
3,600 grams
30.

We use what system of measurement when measuring in science?

a)

metric system

b)

English system

c)

none of the above

d)

all of the above

Similar Resources on Wayground

Tiempo Atmosférico y Clima

25 questions

Tiempo Atmosférico y Clima

quiz

Worksheet

•

7th Grade

Lever

25 questions

Lever

quiz

Worksheet

•

6th - 8th Grade

ulangan kelas 7j

25 questions

ulangan kelas 7j

quiz

Worksheet

•

7th Grade

Light

25 questions

Light

quiz

Worksheet

•

5th - 7th Grade

coherencia textual 1003

25 questions

coherencia textual 1003

quiz

Worksheet

•

6th - 11th Grade

Biomas Brasileiros 7 D,E,F,G

25 questions

Biomas Brasileiros 7 D,E,F,G

quiz

Worksheet

•

7th Grade

Energy for Final

25 questions

Energy for Final

quiz

Worksheet

•

7th - 8th Grade

Soal Latihan 2 Gerak dan Gaya

25 questions

Soal Latihan 2 Gerak dan Gaya

quiz

Worksheet

•

7th Grade