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Chemistry Final Exam Review

Total questions: 40

Worksheet time: 31mins

Name
Class
Date
1.

Which of the following is an example of a synthesis reaction?

a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
2.

What reaction has the following general formula:

AB --> A + B

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

3.
In a chemical reaction, everything to the right of the arrow is called ______________.
a)
Products
b)
Yields
c)
Molecules
d)
Reactants
4.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
5.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
6.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
7.

A __________ is a subatomic particle with a positive charge.

a)

proton

b)

neutron

c)

electron

d)

nucleus

8.

How many electrons can fit on the 1st energy level (orbital) for any Bohr Model?

a)

2

b)

6

c)

8

d)

10

9.

What is a valence electron?

a)

Electrons in the first energy shell

b)

Electrons in the second energy shell

c)

Electrons in the outer shell

d)

Total number of electrons

10.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

11.
What units are used to measure mass?
a)
g
b)
cm3
c)
g/cm3
d)
cm3/g
12.

What is matter?

a)

anything that has mass and takes up space

b)

anything that can be felt

c)

anything that can behave in many different ways

d)

anything that exist on Earth

13.
Which part of the atom is green?
a)
neutrons
b)
protons
c)
nucleus
d)
electrons
14.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
15.
What part of an atom is involved in chemical bonding?
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
16.

If 2.00 L of a gas in a container at room temperature exerts a pressure of 4.00 atm. If the pressure doubles and the temperature remains the same, the volume would become ________.

a)

16.0 L

b)

2.00 L

c)

4.00 L

d)

1.00 L

17.

What are the coefficients that will balance the skeleton equation below?

AlCl3 + NaOH → Al(OH)3 + NaCl

a)

1,3,1,3

b)

3,1,3,1

c)

1,1,1,3

d)

1,3,3,1

18.

The equation 2C3H7OH + 9O2 → 6CO2 + 8H2O is an example of which type of reaction?

a)

Combustion reaction

b)

Single replacement reaction

c)

Double replacement reaction

d)

Decomposition reaction

19.

Is this the correct lewis dot for Chlorine?

a)

yes

b)

no

20.

Which one is the least reactive group?

a)

Alkali metal

b)

Alkali earth metal

c)

Halogens

d)

Noble Gases

21.

Which answer is an example of a chemical change?

a)

Boiling water

b)

rusting iron

c)

dissolving powder

d)

freezing water

22.

Which answer is an example of a physical change?

a)

freezing water

b)

burning coal

c)

rusting iron

d)

baking a cake

23.

1s22s22p63s23p63d104s24p3

Which element does this configuration belong to?

a)

Arsenic

b)

Calcium

c)

Lithium

d)

Aluminum

24.

Which of the following substances are elements?

a)

water

b)

salt

c)

carbon dioxide

d)

hydrogen

25.

Which describes a liquid?

a)

It keeps its shape, and has weight.

b)

It takes the shape of its container and has weight.

c)

It has NO weight or shape.

26.
The right of the arrow is called?
a)
Reactant 
b)
Product
c)
Yields
27.
List the coeffecieints in order.
a)
4,3,2
b)
2,2,3
c)
4,2,3
d)
1,2,3
28.
List the subscripts in the product only.
a)
2
b)
2,2,3
c)
2,3
d)
4,3,2,
29.

If an element has 11 protons and 12 Neutrons, what is it's atomic mass?

a)

12

b)

11

c)

23

d)

1

30.

Based on the Bohr model, how many valence electrons does this atom have?

a)

7

b)

1

c)

5

d)

4

31.

Four substances were tested for pH, lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Which of the following correctly lists the substances from most basic to acidic?

a)

lemon juice, milk, baking soda, bleach

b)

bleach, baking soda, milk, lemon juice

c)

milk, lemon juice, baking soda, bleach

d)

baking soda, bleach, lemon juice, milk

32.

What type of reaction occurs between an acid and a base?

a)

Combustion

b)

Synthesis

c)

Neutralization

d)

Double Replacement

33.

What is the molarity of 9 moles of hydrochloric acid in 3 L of water. 

a)

3

b)

1

c)

6

d)

9

34.

Bases have a pH...

a)

of 7

b)

less than 7

c)

more than 7

35.

Calculate the molar mass for Al(OH)3

a)

78.0 g/mol

b)

72 g/mol

c)

28 g/mol

d)

25 g/mol

36.
What is the percent by mass of magnesium in MgO?
a)
20%
b)
40%
c)
50%
d)
60%
37.
What is the mass of 0.89 mol of CaCl2?
a)
111 grams
b)
0.008 grams
c)
98.9 grams
d)
none of the choices
38.

How many molecules are there in 1 mole of water?

a)

5.28 x 10-23 molecules

b)

6.02 x 1023 molecules

c)

4.28x 1025 molecules

d)

1.91 x 1023 molecules

39.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
40.

Name the following ionic compound: BeCl2

a)

beryllium chlorine

b)

beryllium II chloride

c)

beryllium chloride

d)

beryllium dichloride

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