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Elements, Compounds, Mixtures - Chemistry 7

Total questions: 25

Worksheet time: 16mins

Name
Class
Date
1.

What type of matter is A.

a)

Heterogenous mixture

b)

Element

c)

Homogenous mixture

d)

Compound

2.

What type of matter does C demonstrate?

a)

Heterogenous mixture

b)

Element

c)

Homogenous mixture

d)

Compound

3.

A substance that cannot be physically separated but can be chemically separated is called a(n)

a)

Element

b)

Heterogenous mixture

c)

Homogenous mixture

d)

Compound

4.

What state of matter are the green particles in C?

a)

Solid

b)

Liquid

c)

Gas

5.

In the following image, what state of matter does D demonstrate.

a)

Gas

b)

Solid

c)

Liquid

6.

Water is an example of...

a)

Homogenous mixture

b)

Element

c)

Compound

d)

Heterogenous mixture

7.

Does Sand and Water demonstrate a homogenous mixture, heterogenous mixture, or a element?

a)

Heterogenous mixture

b)

Homogenous mixture

c)

Compound

d)

Element

8.

What is a pure substance that cannot be broken down?

a)

Compound

b)

Element

c)

Mixture

d)

Metal

9.

A _______ _________ is what we call when the composition is not uniform throughout.

a)

homogeneous mixture

b)

heterogeneous mixture

10.
Sugar water is a 
a)
solution
b)
suspension
c)
colloid
11.
Which of the following are pure substances?
a)
solutions
b)
compounds
c)
homogeneous mixtures
d)
colloids
12.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
13.
Which of these is a pure substance?
a)
bread
b)
table salt
c)
garden soil
d)
sea water
14.

What is a substance made of two or more elements that are chemically combined called?

a)

A. element

b)

B. compound

c)

C. mixture

d)

D. solution

15.

What is the definition of a compound?

a)

The smallest part of any substance which can exist on its own

b)

Two or more atoms chemically joined together (can be the same or can be different)

c)

A simple substance in which all the atoms are identical

d)

Two or more different elements chemically joined together

16.
All matter is made of .....
a)
energy 
b)
atoms 
c)
air
d)
chemistry
17.

A substance that cannot be broken down into any other substance by ordinary chemical means is called

a)

a molecule.

b)

a mixture.

c)

an element.

d)

a compound.

18.

Two or more physically combined substances form

a)

a compound.

b)

an acid.

c)

an element.

d)

a mixture.

19.

A substance that contains only one type of atom is a(n)

a)

compound

b)

element

c)

heterogeneous mixture

d)

homogeneous mixture

20.
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
21.

Brass is a metal that is bright red and gold. It is formed by combining, not chemically, two elements, zinc and copper. Based on the information, how would brass be classified?

a)

an element

b)

compound

c)

mixture

d)

suspension

22.

True or False: All molecules are compounds.

a)

true

b)

false

23.

The smallest unit of a compound is

a)

an element.

b)

a molecule.

c)

an atom.

d)

a mixture.

24.

Chocolate Chip Muffin

a)

Compound

b)

Element

c)

Mixture

25.

H

a)

Compound

b)

Element

c)

Mixture