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Worksheets

class ix

Total questions: 50

Worksheet time: 38mins

Name
Class
Date
1.
Which of the following is a pure substance? 
a)
Water
b)
Salad
c)
Chocolate milk
d)
All of them 
2.
Max is hungry and he prepares cereal with milk. This is an example of a: 
a)
Homogeneous mixture
b)
Heterogeneous mixture
3.
A pure substance CAN'T BE separated physically. 
a)
True
b)
False
4.

What is this?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous MIxture

5.

What is this?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

6.

What is this?

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

7.
Milk
a)
Heterogeneous mixture
b)
Homogeneous mixture
8.
cake batter
a)
heterogeneous mixture
b)
homogeneous mixture
9.

What is this?

a)

Element

b)

Compound

c)

Heterogeneous MIxture

d)

Homogeneous Mixture

10.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous MIxture

11.

What is it?

a)

Pure Substance

b)

Mixture

12.

When there is one type of atom

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

13.

When there is 2 or more atoms combined together

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

14.

A group of 2 or more items, that are not chemically combined

a)

Pure Substance

b)

Mixture

15.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

16.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

17.

Which of these is a mixture?

a)

Laundry Detergent

b)

Salt (NaCl)

c)

Oxygen (O)

d)

Fluorine (Fl)

18.

Air is:

a)

An element

b)

A compound

c)

A mixture

d)

None of these

19.
What is an example of a mixture?
a)
iron
b)
ice
c)
soil
d)
gold
20.

Which of the following is classified as a pure substance?

a)

Lemonade

b)

Fruit punch

c)

ketchup

d)

Helium

21.
A mixture that is uniform and well mixed is _____.
a)
homogeneous
b)
hetergeneous
c)
pure substance
d)
compoud
22.

Ammonia is a colorless gas with the formula NH3. Ammonia contains hydrogen and nitrogen and cannot be broken down physically. Ammonia is a ___________________ .

a)

element

b)

compound

23.

Nickel has the chemical symbol Ni and atomic number 28. It is a silvery-white metal and cannot be broken down physically or chemically into a more simple substance. Nickel is a ___________________ .

a)

element

b)

compound

24.

The noble gases are a group of six substances with similar properties. They are odorless, colorless gases with low reactivity. They are group 18 on the periodic table. Each noble gas is a(n) _______ .

a)

element

b)

compound

c)

heterogeneous mixture

d)

homogenous mixture/solution

25.
A _______________ mixture is when the parts of the mixture are evenly mixed and you can't see the different parts. 
a)
heterogenous mixture
b)
homogeneous mixture
26.
An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated
a)
The molecules will begin to move slower.
b)
The molecules will begin to move faster
c)
The molecules will begin to increase in density
d)
The molecules will begin to condense in the air.
27.
Which among the following is an element?
a)
brass
b)
bronze
c)
silver
d)
stainless steel
28.
Physical or chemical change?
A solid is crushed into a powder?
a)
physical change 
b)
chemical change 
29.
The symbol of gold is _____
a)
Go 
b)
Au
c)
Gd
d)
A
30.
How is a gas defined?
a)
Indefinite shape, indefinite volume
b)
Definite shape, definite volume
c)
Found in stars
d)
Definite volume, indefinite shape
31.
Define a liquid.
a)
Indefinite shape, indefinite volume
b)
Definite shape, definite volume
c)
Found in stars
d)
Definite volume, indefinite shape
32.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
33.
What is a  pure substance made of two or more elements chemically combined in a set ratio. Ex: CO2 has a set ratio of 1:2, meaning for every one carbon atom there are two oxygen atoms.
a)
element
b)
compound
c)
mixture
d)
salad
34.
What type of property can only be observed by changing the substance into a new substance. Ex: Flammability, oxidation
a)
chemical
b)
physical
35.
What is matter
a)
Anything which is solid
b)
Anything that takes up space and has mass
c)
when something is wrong
36.
Melting
a)
liquid to solid
b)
solid to liquid
c)
solid to gas
d)
gas to liquid
37.
Freezing
a)
Solid to gas
b)
Liquid to solid
c)
Gas to solid
d)
Liquid to gas
38.
Boiling
a)
liquid to gas
b)
gas to solid
c)
gas to liquid
d)
solid to liquid
39.

If you want to separate iron fillings from sand, you would use a _____.

a)

funnel

b)

filter

c)

magnet

d)

colander or sieve

40.

______ is a separation technique that uses the differences in boiling points of various substances to separate mixtures.

a)

filtration

b)

crystallization

c)

distillation

d)

chromatography

41.

A technique that separates a mixture based on the individual substance's tendency to travel across a surface is called _____.

a)

filtration

b)

crystallization

c)

distillation

d)

chromatography

42.

To remove oil from water I will use....

a)

DECANTATION

b)

FILTRATION

c)

MAGNETISM

d)

CRYSTALLIZATION

43.

The special heterogeneous mixture made up of water and salt is called...

a)

RIVER

b)

SOLUTION

c)

WATER

d)

LAKE

44.

What is the correct order for obtaining salt from a mixture of sand and salt?

a)

Dissolving in water - filtration – evaporation

b)

Evaporation - filtration - dissolving in water

c)

Filtration - dissolving in water - evaporation

d)

Dissolving in water – evaporation - filtration

45.
A measure of how much mass is contained in a given unit of volume.
a)
mass
b)
density
c)
volume
d)
matter
46.
The amount of space something takes up
a)
density
b)
volume
c)
mass
d)
matter
47.
Iron + oxygen = rust is an example of a ___________.
a)
physical property/change
b)
chemical property/change
c)
mass
d)
volume
48.
A watermelon has more matter than a grape, so it has more
a)
mass
b)
eat
c)
solid
d)
greater
49.
You can measure ______ with grams.
a)
mass
b)
volume
c)
conductivity
d)
melting point
50.
The ability of a metal to allow heat or electricity to pass through it.
a)
conductivity
b)
insulator
c)
mass
d)
density

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