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Elements Compounds and Mixtures

Total questions: 37

Worksheet time: 37mins

Name
Class
Date
1.

An atoms is made of

a)

Electrons

b)

Protons

c)

Neutron

d)

Megatrons

2.

The positive part of an atom is the

a)

Neutron

b)

Electron

c)

Proton

d)

Mew-tron

3.

Electrons are

a)

Positively charged

b)

Negatively charged

c)

Neutral

4.

Atom's atomic number is

a)

The number of neutron it has

b)

The number of neutrons/protons in its nucleus

c)

The number of protons/electrons it has

5.

The number of protons in Helium is

a)

1

b)

2

c)

3

d)

4

6.

Oxygen atom has

a)

6 electrons

b)

5 protons

c)

8 electrons

d)

7 protons

7.

Elements

a)

Are made of molecules

b)

Contain atoms

c)

Have many different types of atoms

d)

Have just one type of atom

8.

Compounds are molecules that are

a)

made of one type of atom

b)

made of many different types of atoms

c)

not made of atoms

9.

A Monoatomic molecule is

a)

Made of more than one type of atoms

b)

Made of one atom

c)

Xenon (Xe)

d)

Iron (Fe)

10.

A polyatomic molecule

a)

Is made of more than 1 type

b)

Can have just one type of atoms in it

c)

Can have more than one type of atoms in it

d)

None of the above

11.

Carbon dioxide exists in

a)

Free floating form

b)

Lattice structure

12.

Ice is an example of a compound that has

a)

Free floating form

b)

Lattice structure

13.

According to this image,

a)

Juice is denser than oil

b)

Gold is denser than charcoal

c)

Helium has less density than air

d)

Charcoal has less density than oil

14.

When all parts of a mixture has the same composition, its called a

a)

Homogeneous Mixture

b)

Heterogeneous Mixture

c)

I wasn't listening mixture

d)

I don't remember mixture

15.

The image is showing

a)

An element

b)

A compound

c)

A homogeneous mixture

d)

A heterogeneous mixture

16.

Element Compound or mixture?

a)

Element

b)

Compound

c)

Mixture

17.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

18.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

19.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

20.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

21.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

22.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

23.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

24.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

25.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

26.

Elements, compounds or mixture?

a)

Element

b)

Compound

c)

Mixture

27.

Identify the formula based on the supplement sheet

a)

O2

b)

2O

c)

2Cl

d)

Cl2

28.

Identify the formula based on the supplement sheet

a)

HCl

b)

H2 and Cl2

c)

CO2

29.

Identify the formula based on the supplement sheet

a)

H2O

b)

O2

c)

H2O and O2

d)

H2O and H2

30.

Identify the formula based on the supplement sheet

a)

Sulfur

b)

S2

c)

Argon

d)

Ar

e)

Ar2

31.

Identify the formula based on the supplement sheet

a)

CH4

b)

C4H

c)

4CH

d)

CO2

32.

Identify the formula based on the supplement sheet

a)

CH4O2

b)

4CH and 4O

c)

4CO2 and H4

d)

4CH4 and 4O2

33.

Identify the formula based on the supplement sheet

a)

2Ar, 3O2 and 8N2

b)

Ar2(O3N8)2

c)

Ar2(2NO)16

34.

Identify the formula based on the supplement sheet

a)

C,H,O

b)

5CH3OH

c)

O2(CH)5

35.

Identify the formula based on the supplement sheet

a)

5H2O

b)

CH2 and H2O

c)

5CO2 and 5H2O

d)

5CHO3

36.

Based on the supplement sheet, what is this mixture made of?

a)

Sulfur rings, Water and Phosphorus

b)

Water and sulfur rings

c)

Pwetty Colors

37.

Based on your supplement sheet, the following mixture is made of

a)

Oxygen, carbon, and hydrogen

b)

5 carbon dioxide and 4 water molecules

c)

Equal parts carbon dioxide and water molecules

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