WorksheetsEnd of Course Review
Total questions: 25
Worksheet time: 21mins
Name
Class
Date
1.
The Law of Conservation of Mass states
a)
that matter exists in all states and reacts the same
b)
that matter can only be changed into new substances by introducing a catalyst
c)
that matter exists in the same state throughout any chemical change
d)
that matter cannot be created or destroyed and that the mass of the products must equal the mass of the reactants
2.
Which of the following IS a physical change?
a)
Getting a haircut
b)
Rusty metal
c)
sour milk
d)
A compound
3.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
4.
A group of atoms bonded together.
a)
A Molecule
b)
The Coefficient
c)
The Subscript
d)
An Atom Party
5.
How many oxygen atoms are in this chemical formula?
a)
7 oxygen atoms
b)
4 oxygen atoms
c)
3 oxygen atoms
d)
1 oxygen atoms
6.
Which of the following is an example of a chemical change?
a)
cutting your hair
b)
burning wood
c)
boiling water
7.
Select the pair of words that correctly displays the general FORMAT for writing CHEMICAL EQUATIONS.
a)
products --> reactants
b)
products --> products
c)
reactants --> products
d)
reactants --> reactants
8.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
9.
How many Al atoms are in 4 Aluminum Oxide molecules?
4 Al2O3
a)
2
b)
8
c)
6
d)
4
10.
A copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
11.
An gel ice pack getting cold after you break the contents inside.
a)
Exothermic
b)
Endothermic
12.
How many total atoms in all are in a molecule of serotonin?
C10H12N2O
C10H12N2O
a)
22
b)
24
c)
25
d)
4
13.
The red numbers in the image represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
14.
Which of the following is evidence of a chemical reaction?
a)
fizzing
b)
water changing to ice
c)
saltwater
d)
paper being cut in half
15.
12 g of Magnesium (Mg) + 8 g of Oxygen (O) will combine to form how many grams of Magnesium Oxide (MgO)?
a)
20 g
b)
13 g
c)
4 g
d)
128 g
16.
The number (mass) of all the atoms on the left side of a chemical equation is ALWAYS the same as the right side of the equation.
a)
true
b)
false
17.
Which contains the most number of total atoms?
a)
CO2
b)
2H2O
c)
C12H22O11
d)
C6H12O6
18.
If you begin with 6 atoms of Carbon in the reactants, how many will be in your product?
a)
3
b)
6
c)
9
d)
12
19.
The left side of the equation is called
a)
Products
b)
Reactants
20.
The right side of the equation is called the
a)
products
b)
reactants
21.
What is the base unit for measuring mass?
a)
Meter
b)
Liter
c)
Gram
22.
Volume is
a)
the amount of space an object takes up.
b)
the amount of matter in an object.
c)
the distance from one point to another.
d)
the amount of heat in a substance.
23.
What is the base unit for measuring length?
a)
Meter
b)
Liter
c)
Gram
24.
A meter stick would be used for measuring
a)
mass.
b)
liquid volume.
c)
regular solid volume.
d)
irregular solid volume.
25.
Which measurement below would be mass?
a)
12 g
b)
12 m
c)
12 mL
d)
12 inches
100 %
