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Matter Unit Review

Total questions: 64

Worksheet time: 48mins

Name
Class
Date
1.
All matter is made of 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
2.
What is the basic unit of matter and is the smallest particle of an element?
a)
Atoms
b)
Elements
c)
Compounds
d)
Molecules
3.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
4.
What is the total number of atoms in an ammonia (NH3) molecule?
a)
1
b)
2
c)
3
d)
4
5.
Carbon dioxide (CO2) contains how many atoms of oxygen?
a)
0
b)
1
c)
2
d)
3
6.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

7.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

8.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

9.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

10.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

11.

Mixture or Pure Substance?

a)

Mixture

b)

Pure Substance

12.
Element or Compound?
H2O
a)
Element
b)
Compound
13.
Element or Compound?
H2SO4
a)
Element
b)
Compound
14.
Element or Compound?
Au
a)
Element
b)
Compound
15.
Element or Compound?
As
a)
Element
b)
Compound
16.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
17.

Freshly brewed black coffee

a)

Heterogeneous

b)

Homogeneous

18.

Lucky Charms

a)

Heterogeneous

b)

Homogeneous

19.

Dirt

a)

Heterogeneous

b)

Homogeneous

20.

Air

a)

Heterogeneous

b)

Homogeneous

21.
Air
a)
Heterogeneous
b)
Homogeneous
22.
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
23.
A mixture that is NOT evenly distributed is called ....
a)
Compounded
b)
Homogenous
c)
Heterogenous
d)
Salty
24.
Sugar water is a 
a)
solution
b)
suspension
c)
colloid
25.
Milk is a 
a)
solution
b)
suspension
c)
colloid
26.
What type of mixture separates upon standing?
a)
Solution
b)
Alloy
c)
Colloid
d)
Suspension
27.
type of mixture that doesn't separate on its own but still contains undissolved particles
a)
solution
b)
colloid
c)
suspension
28.

The beaker on the left would be a (both have been recently stirred)

a)

Solution

b)

Suspension

c)

Colloid

d)

Impossible to tell

29.

Which tools are best for separating a mixtures of sand, iron filings, and water?

a)

Hot plate and filter

b)

Tweezers and filter

c)

Filter and magnet

d)

Magnet and hot plate

30.

Which mixture can be separated using a filter?

a)

sand and iron filings

b)

saltwater

c)

sand and water

d)

none of the above

31.

A cup of orange juice with pulp is poured into a glass. Which of these procedures could be done to separate the juice from the pulp?

a)

pour the juice through a coffee filter

b)

heat the juice in a pot until boiling

c)

pour the juice in another cup

d)

allow the mixture to settle, leaving the pulp at the bottom of the glass

32.
Which one of these is a chemical property?
a)
melting point
b)
boiling point
c)
color
d)
flammability
33.
Ability to rust is this type of property:
a)
Physical property
b)
Chemical property
34.
Blue Color: Chemical or Physical Property
a)
Chemical Property
b)
Physical Property
35.
Is wood burning a physical or chemical change?
a)
Physical 
b)
Chemical
36.
Is milk going sour a physical or chemical change?
a)
Physical 
b)
Chemical
37.
Is Gatorade powder dissolving in water physical or chemical change?
a)
Physical 
b)
Chemical
38.
Is copper tarnishing a physical or chemical change?
a)
Physical 
b)
Chemical
39.

What is a physical property of these strawberries?

a)

Red

b)

Rotten

c)

Flammable

40.

What is a chemical property of paper?

a)

Flammable

b)

White

c)

Light

41.

Choose whether the following is a physical or chemical property: Reacts with oxygen

a)

Physical

b)

Chemical

42.

Choose whether the following is a physical or chemical property: Magnetic

a)

Physical

b)

Chemical

43.
Which is a way that a piece of paper can go through a chemical change?
a)
fold the paper in half
b)
soak the paper in water
c)
burn the paper with fire
d)
cut the paper with scissors
44.
Which example best describes a physical change?
a)
iron rusting
b)
charcoal burning
c)
an ice cube melting
d)
a marshmallow burning
45.
Which statement best describes why baking a cake is an example of a chemical change?
a)
The process takes place in an oven.
b)
The process requires heat energy.
c)
The process cannot be reversed.
d)
The process can be repeated.
46.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
47.
The number to the lower side of an element is a 
a)
Subscript
b)
Superscript
c)
Coefficient
d)
Charge
48.
The number in front of a compound or element is a 
a)
Subscript
b)
Coefficient
c)
Superscript
d)
Charge
49.
A chemical reaction is balanced when
a)
both sides have the same elements
b)
Both sides have the same  number of atoms
c)
Same subscripts
d)
Same coefficients
50.
The coefficient in  3H2O is
a)
6
b)
2
c)
3
d)
5
51.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
52.
In a reaction A + B ----> C,  reactant A has 5g and product  C has 9g. How many grams does reactant B should have? 
a)
4g
b)
5g
c)
9g
d)
14g
53.
Which are the reactants in the following reaction?
2Mg + O2 ---> 2MgO 
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
54.
Maria fills a bowl with 200 g of water. She puts the bowl of water in the freezer, and the water freezes. Which will most likely be the mass of the frozen water?
a)
50 g
b)
100 g
c)
200 g
d)
400 g
55.

Does the equation H2+O2 →H2O follow the Law of Conservation of Mass?

a)

Yes, because the atoms are equal.

b)

No, because more info is needed.

c)

No, because there are more atoms in the product.

d)

No, because there are more atoms in the reactant.

56.

How many grams of OXYGEN would be needed to show conservation of mass in the example below?

a)

100 g

b)

93 g

c)

7 g

d)

0 g

57.

How many grams of coal were present at the start of the chemical change?

a)

Unknown

b)

100 g

c)

200 g

d)

50 g

58.

How many grams of CHOCOLATE POWDER are shown in the example of conservation of mass below?

a)

450 g

b)

465 g

c)

0 g

d)

15 g

59.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
60.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
61.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
62.
Is this balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
NO!
63.
Why is the following chemical equation not balanced?
H2 + O2 --> H2O
a)
each side of the equation has a different number of oxygen atoms
b)
each side of the equation has a different number of hydrogen atoms
c)
each side has the same mass
64.
Is the following equation balanced or unbalanced?
Fe + S --> FeS
a)
balanced
b)
unbalanced

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