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Worksheets

Material changes

Total questions: 44

Worksheet time: 33mins

Name
Class
Date
1.

Sodium metal is cut with a knife

a)
Physical 
b)
Chemical
2.

Sugar is mixed and dissolved into water.

a)
Physical 
b)
Chemical
3.

Cooking an egg

a)
Physical 
b)
Chemical
4.

Wood Burning

a)
Physical 
b)
Chemical
5.

Which of the following is NOT an example of a physical change?

a)

crumpled paper

b)

dissolving sugar in water

c)

freezing water

d)

burning a marshmallow

6.
Kim puts an ice cube in a beaker and it melts. This is a good example of:
a)
a physical change.
b)
a chemical change.
c)
an experiment.
d)
an analysis.
7.
A chemical change is different than a physical change because in a chemical change
a)
Chemicals are used
b)
Molecules do not physically touch
c)
A new substance is formed and in a physical change no new substance is formed
d)
The change can be seen but in a physical change it cannot
8.

Which of the following is not an example of a physical change?

a)

Mixing salt and water

b)

Burning wood

c)

Boiling water

d)

Melting ice

9.

Which of the following is an example of a chemical change?

a)

Melting ice

b)

Mixing salt and water

c)

Burning wood

d)

Cutting paper

10.

What is the main difference between physical and chemical changes?

a)

Physical changes only affect the physical properties of a substance, while chemical changes result in the formation of new substances.

b)

Physical changes only affect the chemical properties of a substance, while chemical changes result in the formation of new substances.

c)

Physical changes involve a change in state, while chemical changes involve a change in color.

d)

Physical changes are reversible, while chemical changes are irreversible.

11.

Which of the following is an example of a chemical change?

a)

Burning of wood

b)

Cutting a piece of paper

c)

Mixing of salt and water

d)

Melting of ice

12.

Contains two or more atoms chemically combined

a)

Elements

b)

Compounds

c)

Mixtures

13.
The air is a _________. 
a)
element 
b)
mixture 
c)
compound 
d)
energy 
14.

Examples are Neon (Ne) and Uranium (U)

a)

elements

b)

mixtures

c)

compounds

15.

This picture represents which of the following?

a)

element

b)

compound

c)

mixture

16.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
17.

In this diagram, X represents...

a)

A compound

b)

A mixture

c)

An atom

d)

An element

18.

carbon dioxide, CO2, is an example of a(n)

a)

element

b)

compound

c)

mixture

19.
The atom is the smallest part of...
a)
An element
b)
A compound
c)
A mixture
20.
Which of the following is an element?
a)
Sugar
b)
Salt
c)
Water
d)
Oxygen
21.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
22.

A student is observing a substance that contains multiple element that have been chemically combine C6H12O6(SUGAR). Which of the following best describes what the student is observing?

a)

Heterogeneous Mixture

b)

Homogeneous Mixture

c)

Element

d)

Compound

23.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
d)

atom

24.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
d)

atom

25.

This substance can be separated by physical means such as filtering, sifting, and evaporating.

a)

Mixtures

b)

Pure Substances

c)

Elements

d)

Compounds

26.

is a property referring to the ability for a given substance, the solute, to dissolve in a solvent.

a)

Solution

b)

Solvent

c)

Soluble

d)

Solubility

27.

Factors affecting Solubility

a)

Temperature

b)

Soluble

c)

Liquid

d)

Matter

28.

Water and salt are mixed together. Hot water, coffee and sugar are mixed together. Which substance is the solvent in both?

a)

sugar

b)

water

c)

coffee

d)

salt

29.

When you add so much solute that no more dissolves, you have ...

a)

neutralization

b)

unsaturated solution

c)

saturated solution

d)

suspension

30.

In the picture beside, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve in water?

a)

stir the powder in the liquid

b)

freeze the mixture

c)

add more powder to liquid

d)

store the mixture

31.

In which beaker does salt dissolves faster?

a)

ice water

b)

room temperature

c)

hot water

32.

Type of mixture in which all substances are evenly distributed is a ?

a)

solute

b)

solvent

c)

Solution

33.

What is a solvent?

a)

the substance that is being dissolved in a solution

b)

the mixing of different substances

c)

the substance that does the dissolving in a solution

34.

What is a solute?

a)

the substance that is dissolved into the solution

b)

the substance that does the dissolving in a solution

c)

the mixing of different substances

35.

Which of the following will allow for more solute than normal to be dissolved in a solvent?

a)

freezing the solution

b)

cooling the solution

c)

shaking the solution

d)

heating the solution

36.
Substances present at the start of a chemical reaction
a)
subscripts
b)
coefficients
c)
reactants
d)
products
37.

iron + sulfur --> iron sulfide


from that word equation, the reactant(s) is/are ....

a)

iron

b)

iron and sulfur

c)

sulfur

d)

iron sulfide

38.

when something burns, it reacts with the .... in the air

a)

CO2

b)

CO

c)

C

d)

O2

39.

What happens in a chemical reaction?

a)

Atoms form new combinations

b)

Atoms do not form new combinations

40.

The product formed in a chemical reaction have different properties from the

a)

reaction

b)

reabsorb

c)

reactase

d)

reactant

41.

Choose the reactant!


zinc + sulfuric acid → zinc sulfate + hydrogen

a)

zinc

b)

sulfuric acid

c)

zinc sulfate

d)

hydrogen

42.

What characteristic defines all chemical changes?

a)

There is a change of state.

b)

Electricity is produced.

c)

Bubbles are produced.

d)

A new material is formed.

43.

Reacts with water to form a gas

a)

Physical property

b)

Chemical property

44.

A solid that dissolves in a liquid is:

a)

Soluble

b)

Insoluble

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