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Year 8 Science Substances

Total questions: 61

Worksheet time: 34mins

Name
Class
Date
1.

What element has the symbol K?

a)

Potassium

b)

Argon

c)

Copper

d)

Iron

2.

What element has the symbol Ca?

a)

Cadmium

b)

Carbon

c)

Mg

d)

Calcium

3.

What element has the symbol Ti?

a)

Helium

b)

Boron

c)

Aluminium

d)

Titanium

4.

What element has the symbol C?

a)

Cadmium

b)

Chromium

c)

Carbon

d)

Calcium

5.

What element has the symbol Be?

a)

Phosphorous

b)

Tin

c)

Boron

d)

Beryllium

6.

What element has the symbol N?

a)

Sodium

b)

Nitrogen

c)

Silicon

d)

Neon

7.

What element has the symbol Na?

a)

Nitrogen

b)

Helium

c)

Sodium

d)

Beryillium

8.

What symbol does Lithium?

a)

Li

b)

Na

c)

Si

d)

L

9.

What symbol does Magnesium have?

a)

Mg

b)

Na

c)

M

d)

Mo

10.

What symbol does hydrogen have?

a)

H

b)

He

c)

Hy

d)

Hi

11.

What symbol does Silicon have?

a)

S

b)

Sy

c)

Si

d)

St

12.

What symbol does sulfur have?

a)

Si

b)

S

c)

Ti

d)

D

13.

What symbol does Argon have?

a)

Ar

b)

A

c)

O

d)

N

14.

What symbol does Oxygen have?

a)

O2

b)

O

c)

No

d)

Ox

15.

What symbol does Neon have?

a)

N

b)

No

c)

Ne

d)

Ni

16.

What type of horseplay is okay in the lab?

a)

Wresting

b)

Tests of Strengths

c)

All of the Above

d)

NONE, the lab is no place for this

17.

When can you perform experiments?

a)

Anytime I want

b)

When nobody is looking

c)

When the teacher gives me permission

d)

When my friends says I can

18.

Who should you report all lab accidents to?

a)

My friend

b)

My parents

c)

My pet

d)

My teacher

19.

What do you do if you spill a chemical?

a)

Tell the teacher

b)

Clean it up before anyone notices

c)

Lick it up

d)

Wipe it up with your shirt

20.

Is eating and drinking okay in the lab?

a)

Yes, I need food when I am dealing with chemicals

b)

No, HCl does not taste good

21.

What do you do if glass breaks?

a)

Throw in the trash

b)

Tell the teacher

c)

Put it in the sink

d)

Just ignore it

22.
Is water an element or a compound?
a)
Element
b)
Compound
23.

A substance that is formed as the result of a chemical reaction

a)
Product 
b)
Reactant
c)
Starters
d)
Enders
24.

The starting materials in a chemical reaction

a)
Products
b)
Reactants
c)
Starters
d)
Enders
25.

Atoms are not made or destroyed in a chemical reaction

a)

True

b)

False

26.

How to identify a chemical reaction? (multiple choice)

a)

Change in shape

b)

change in colour

c)

change in smell

d)

change in length

27.

Testing for hydrogen gas, the lighted wooden splint :

a)

blows out

b)

produced a pop sound

c)

burns more fiercely

28.

Testing for oxygen gas, the wooden splint

a)

melts

b)

burns more fiercely

c)

blows out

29.

A dissolved substance like salt can be seen in a mixture.

a)

True

b)

False

30.
A pure substance...
a)
is an element or a compound
b)
is an element or a mixture
c)
is a compound or a mixture
d)
is a mixture
31.

1 A substance made up of two or more chemically combined elements is —

a)

an element

b)

mixture

c)

compound

d)

solution

32.
NaHCO3 is an example of —
a)
an abbreviation
b)
a compound
c)
a mixture
d)
an element
33.
A substance made of only one type of atom is called —
a)
an element
b)
a mixture
c)
a compound
d)
a salt
34.

Table salt, or sodium chloride has the chemical formula NaCl. How is sodium chloride classified?

a)

as an element

b)

. as a compound

c)

as a mixture

d)

as a liquid

35.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
36.

This picture represents which of the following?

a)

A single element

b)

Mixture of molecules

c)

mixture of atoms

d)

mixture of compounds

37.

What does this illustrate

a)

Elements

b)

Compunds

c)

Mixture of Elements and Compunds

d)

Mixture of Compounds

38.
Which of the following is an element?
a)
Sugar
b)
Salt
c)
Water
d)
Oxygen
39.
This diagram represents a _____.
a)
pure substance that is a compound
b)
mixture of elements
c)
pure substance that is an element
d)
mixture of compounds
40.

This diagram represents a _____.

a)

Element

b)

Compound

c)

Mixture of compound and element

d)

Mixture of two elements

41.

Anything that has mass and volume

a)

volume

b)

liquid

c)

matter

d)

texture

42.

The amount of space something takes up

a)

volume

b)

liquid

c)

matter

d)

texture

43.

The state of matter that has particles that slide by each other

a)

volume

b)

liquid

c)

matter

d)

texture

44.

To squeeze gas into a smaller place

a)

gas

b)

temperature

c)

density

d)

compress

45.

The state of matter that expands to fill its container

a)

gas

b)

temperature

c)

density

d)

compress

46.

The name for the process when a liquid becomes a gas

a)

melting

b)

evaporating

c)

freezing

d)

condensing

47.

The name for the process when a liquid becomes a solid

a)

melting

b)

evaporating

c)

freezing

d)

condensing

48.

The name for the process when a solid becomes a liquid

a)

melting

b)

evaporating

c)

condensing

d)

freezing

49.

The name for the process when a gas becomes a liquid

a)

melting

b)

freezing

c)

evaporating

d)

condensing

50.

This is a diagram of a

a)

solid

b)

liquid

c)

gas

51.

This is a diagram of a ________. The particles are sliding by each other.

a)

solid

b)

liquid

c)

gas

52.

This is a diagram of a

a)

solid

b)

liquid

c)

gas

53.

Which measures temperature?

a)
b)
c)
54.

Which measures volume?

a)
b)
c)
55.

Identify the process shown in the picture

a)

Evaporation

b)

Freezing

c)

Melting

d)

Condensation

56.

Identify the process shown in the picture.

a)

Evaporation

b)

Melting

c)

Freezing

d)

Condensation

57.

Water changes to ________________ on heating.

a)

ice

b)

water vapour

c)

water

d)

None of these

58.

In the process of evaporation__________________

a)

solid changes into liquid

b)

liquid changes into solid

c)

liquid changes into gas

d)

gas changes into liquid

59.

State of matter can be changed by _________________

a)

cooling

b)

heating

c)

pressing

d)

both heating and cooling

60.

Wood, paper, table are examples of ___________

a)

soild

b)

liquid

c)

gas

d)

None of these

61.

Air is a mixture of many ____________

a)

liquids

b)

soilds

c)

gases

d)

all of these

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