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Unit 2 Test Review MATTER 24-25

Total questions: 40

Worksheet time: 19mins

Name
Class
Date
1.
Cookies and cream ice cream would be classified as
a)
A homogenous mixture
b)
A heterogenous mixture
c)
An element
d)
A compound
2.
Two substances physically combined and that appears the same throughout is classified as
a)
A homogeneous mixture
b)
A heterogeneous mixture
c)
An element
d)
  A compound
3.

When a mixture is formed, ____________________________.

a)

a chemical reaction takes place

b)

the substance produced can be represented by a chemical formula

c)

heat and light are produced

d)

the mixture has properties that are similar to those of its components

4.

True or False - A compound can not be a pure substance because it contains more than one type of element

a)

True

b)

False

5.
a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

6.
What is H2SO4 
 made up of?
a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium
7.
Classify the picture with the correct label.
a)
Compounds
b)
Mixture of Elements
c)
Mixture of Compounds
d)
Mixture of Elements & Compounds
8.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements & Compounds
d)
Mixture of Compounds
9.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
10.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
11.

Which of the following is a compound?

a)

CO

b)

Co

c)

C

d)

O2

12.

Reactivity is what type of property?

a)

Physical

b)

Chemical

13.
Which would be the most useful for identifying an unknown liquid?
a)
Weight
b)
volume
c)
mass
d)
density
14.

Which is an example of a chemical change?

a)

frying an egg

b)

boiling water

c)

melting butter

d)

chopping onions

15.

Anything that has mass and takes up space is called

a)

volume

b)

matter

16.

Which of these is a mixture?

a)

Laundry Detergent

b)

Salt (NaCl)

c)

Oxygen (O)

d)

Fluorine (Fl)

17.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
18.
Is burning wood a chemical or physical change?
a)
chemical
b)
physical
19.

Which of the following are examples of a physical change? (Choose ALL that apply)

a)

cutting your hair

b)

burning paper

c)

melting butter

d)

dissolving sugar in water

20.

When water changes to ice, what kind of a change is it?

a)
b)
21.

When a green powder is added to a yellow solution, and the whole thing turns red, this must be a:

a)
b)
22.

What kind of change is metal rusting?

a)
b)
23.

Which of the following are examples of a chemical change?

a)

crushing an aluminum can

b)

sour milk

c)

baking a cake

d)

antacid tablet in water

24.

Which of the following signs show that a chemical change has taken place?

a)

production of a gas

b)

production of an odor

c)

change in energy

d)

all of these

25.

What kind of substances can be separated by physical changes? (choose all that apply)

a)

elements

b)

compounds

c)

homogeneous mixtures

d)

heterogeneous mixtures

26.

What kind of substances can be separated only by chemical changes?

a)

elements

b)

compounds

c)

homogeneous mixtures

d)

heterogeneous mixtures

27.
Which of the following is a pure substance? 
a)
Soil 
b)
Salt
c)
Water and sand
d)
Vanilla ice cream with chocolate
28.

What is happening in the chemical reaction: Na + Cl2 --> NaCl

a)

Two elements are chemically bonding to create a compound

b)

Two compounds are chemically bonded to make a mixture

c)

Two compounds are breaking apart into elements

d)

Two elements are breaking apart to make a compound

29.

When water is heated, causing a change in temperature, this type of change has occurred

a)

physical

b)

chemical

30.

What is happening in the chemical reaction: KI --> K2 + I2

a)

Two elements are chemically bonding to create a compound

b)

Two elements are chemically bonded to make a mixture

c)

One compound is breaking apart into elements

d)

One compound is combined to create a mixture

31.

Fruit salad is an example of...

a)

a homogenous mixture

b)

a heterogenous mixture

c)

a compound

32.

Combination of two or more substances that are not chemically combined.

a)

mixture

b)

solution

c)

solvent

d)

solute

33.

True or False: elements AND compounds are pure substances.

a)

True

b)

False

34.
Which of the following lists only elements?
a)
H2O + OH, MgCl2
b)
H2O, KF, Ne
c)
KCl, Ag, Au
d)
K, Cl, N
35.
Elements can be broken down into simpler substances. 
a)
false 
b)
true 
c)
sometimes 
36.

When a compound is formed, ____________________________.

a)

a chemical reaction takes place

b)

the substance produced can be represented by a chemical formula

c)

the substance produced has properties similar to those of its components

d)

the substance produced has properties different from those of its components

37.

Transition from a liquid to a gas

a)

Condensation

b)

Freezing

c)

Evaporation

d)

Melting

38.

Transition from a liquid to a solid

a)

Freezing

b)

Sublimation

c)

Melting

d)

Evaporation

39.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

40.

Phase changes take place when ________ is added or removed from particles

a)

Energy

b)

Mass

c)

Color

d)

Odor

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