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Pre-Test EXAMPLE

Total questions: 48

Worksheet time: 1hrs 11mins

Name
Class
Date
1.

Freshly brewed black coffee

a)

Heterogeneous

b)

Homogeneous

2.

Lucky Charms

a)

Heterogeneous

b)

Homogeneous

3.

Dirt

a)

Heterogeneous

b)

Homogeneous

4.

Air

a)

Heterogeneous

b)

Homogeneous

5.

Coca-Cola

a)

Heterogeneous

b)

Homogeneous

6.

M&Ms

a)

Heterogeneous

b)

Homogeneous

7.
Air
a)
Heterogeneous
b)
Homogeneous
8.
Sugar water
a)
Heterogeneous
b)
Homogeneous
9.
Vinegar
a)
Heterogeneous
b)
Homogeneous
10.
Are made from a combination of 2 or more elements in a constant ratio...
a)
Atome
b)
Mixture
c)
Compounds
d)
Elements
11.
A combination that can be separated by physical processes is a .....
a)
Atom
b)
Compound
c)
Element
d)
Mixture
12.
What is a homogeneous mixture?
a)
a mixture that is the same throughout.
b)
a mixture that is made up of one type of atom.
c)
a mixture that is made up of one type of compound
d)
a mixture that cannot be separated through physical changes
13.
A mixture that is NOT evenly distributed is called ....
a)
Compounded
b)
Homogenous
c)
Heterogenous
d)
Salty
14.
What type of mixture is this?
a)
homogenous mixture
b)
chemical
c)
heterogeneous mixture 
d)
solid mix
15.
Italian Salad Dressing is a . . .
a)
heterogeneous mixture
b)
homogeneous mixture
c)
Pure Substance
d)
Compound
16.
Chicken soup is an example of what kind of substance?
a)
homogenous mixture
b)
solution
c)
heterogeneous mixture
d)
compound
17.
Kool-Aid
a)
Element
b)
Compound
c)
Homogeneous Mixture
d)
Heterogeneous Mixture
18.
Carbon
a)
Element
b)
Compound
c)
Homogeneous Mixture
d)
Heterogeneous Mixture
19.
Aluminum
a)
Element
b)
Compound
c)
Homogeneous Mixture
d)
Heterogeneous Mixture
20.
NaCl
a)
Element
b)
Compound
c)
Homogeneous Mixture
d)
Heterogeneous Mixture
21.
Sweet Tea
a)
Element
b)
Compound
c)
Homogeneous Mixture
d)
Heterogeneous Mixture
22.

A molecule is created when the same _________ is bonded together. For example: C10

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

23.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
24.
Is melting butter for popcorn a chemical or physical change?
a)
chemical
b)
physical
25.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
26.
A change where one or more new substances are created.
a)
Physical Change 
b)
Chemical Change 
27.
Change in color is a physical change.
a)
True
b)
False
28.
Fizzing, foaming, and burning are all examples of
a)
Chemical change
b)
Physical change
29.
Rust on an iron bar is an example of chemical change.
a)
True 
b)
False
30.
A mixture is the result of a physical change because...
a)
The parts can be separated
b)
A new substance is made
c)
There is a chemical reaction
d)
One part of the mixture disappears
31.
Is hammering wood together to build a house a chemical or physical change?
a)
chemical
b)
physical
32.

 

Which is an example of a physical

change?

a)

a candle burning

b)

baking a cake

c)

evaporating water

d)

metal rusting

33.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
rust
34.
Curling your hair
a)
Chemical Change
b)
Physical Change
35.
Which of the following is NOT an example of a physical change?
a)
crumpled paper
b)
pencil sharpening
c)
shrunken clothing
d)
sour milk
36.
Evidence of a physical change.
a)
New substance
b)
Shape Change
c)
Light produced
d)
Gas released.
37.

A green powder is heated & a gas is given off while it turns to a black solid. This describes

a)

Physical Change

b)

Chemical Change

c)

Change in State

d)

Change in Temperature

38.

Which of the following examples represents a physical change?

a)
b)
c)
d)
39.
What is the mass number defined as?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
40.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
41.

What is the atomic number of Barium, Ba? (enlarge the periodic table)

a)

20

b)

38

c)

56

d)

88

42.

What is the atomic number of Nickel? (enlarge the periodic table)

a)

110

b)

28

c)

46

d)

78

43.

How many protons are in a sodium atom, Na? (tap to enlarge the periodic table)

a)

Sodium has 1 proton.

b)

Sodium has 3 protons.

c)

Sodium has 11 protons

44.

An element has the mass number 12 and atomic number 6. The number of neutrons in it is:

a)

6

b)

10

c)

4

d)

8

45.

Atoms of the same element which have a different number of neutrons are called _________________.

a)

ions

b)

isotopes

c)

quarks

d)

molecules

46.

Which subatomic particle has a negative charge in the atom?

a)

proton

b)

neutron

c)

electron

d)

quark

47.

If an atom has 10 electrons, how many protons does it have?

a)

0

b)

1

c)

10

d)

5

48.

How many electrons are in an atom with an atomic number of 50?

a)

5

b)

8

c)

50

d)

2

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