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3/6 Chemistry Review

Total questions: 30

Worksheet time: 38mins

Name
Class
Date
1.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
2.
Elements on the LEFT side of the periodic table will most likely form:
a)
Positive ions
b)
Negative ions
c)
Neutral Ions
d)
None of these
3.
Bonds that form between two metals are called ______________ bonds.
a)
ionic 
b)
covalent
c)
metallic
d)
pervasive
4.
If an atom loses two electrons what charge will it have?
a)
+ 2
b)
 - 2
c)
+1
d)
-1
5.
If an atom gains one electron what charge will it have?
a)
-2
b)
-1
c)
+1
6.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
7.

Why do atoms bond?

a)

They typically don't bond

b)

To add or take away energy levels

c)

To have a full valance shell.

d)

To have a full inner shell

8.

Ionic bonding is between a

a)

nonmetal and nonmetal

b)

metal and nonmetal

c)

metal and metal

d)

Depends on the situation

9.
Which of the following is TRUE for all chemical reactions?
a)
the total mass of the reactants increases
b)
the total mass of the products is greater than the total mass of the reactants
c)
the total mass of the products is less than the total mass of the reactants
d)
the total mass of the reactants equals the total mass of the products
10.
True or False: When balancing chemical equations the subscripts can change.
a)
true
b)
false
11.

What kind of reaction is this:

2H2O2 →2 H2O + O2

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Combustion

e)

Double Replacement

12.

What kind of reaction is this:

2C3H7OH +9O2 → 6CO2 + 8H2O

a)

Double Replacement

b)

Combustion

c)

Single Replacement

d)

Decomposition

e)

Combination

13.

What kind of reaction is this:

Fe + CuSO4 → Cu + FeSO4

a)

Double Replacement

b)

Decompostion

c)

Single Replacement

d)

Combustion

e)

Combination

14.

Balance this equation.

Cl2 + MgF2 --> F2 + MgCl2

a)

Cl2 + MgF2 --> F2 + MgCl2 (already balanced)

b)

Cl2 + 2MgF2 --> F2 + 2MgCl2

c)

2Cl2 + MgF2 --> 2F2 + MgCl2

d)

Cl2 + 2MgF2 --> 2F2 + MgCl2

15.

Balance this equation.

Cl2 + MgF2 --> F2 + MgCl2

a)

Cl2 + MgF2 --> F2 + MgCl2 (already balanced)

b)

Cl2 + 2MgF2 --> F2 + 2MgCl2

c)

2Cl2 + MgF2 --> 2F2 + MgCl2

d)

Cl2 + 2MgF2 --> 2F2 + MgCl2

16.

Balance this equation-

P4 + O2 --> P2O3

a)

P4 + O2 --> P2O3 (already balanced)

b)

P4 + 3O2 --> 2P2O3

c)

P4 + O2 --> 2P2O3

d)

2P4 + 3O2 --> 2P2O3

17.

Balance this equation

N2 + H2 --> NH3

a)

N2 + H2 --> NH3 (already balanced)

b)

N2 + 3H2 --> 2NH3

c)

N2 + H2 --> 2NH3

d)

N2 + H2 --> N2H2

18.

You balance an equation by adding

a)

ion charges

b)

subscripts

c)

random numbers

d)

coefficients

19.

Where in a chemical equation is the catalyst?

a)

Left (before the arrow)

b)

Right (after the arrow)

c)

Above the arrow

d)

It depends on the reaction

20.

Predict the product(s)


K + CuCl2 --> ???????

a)

KCu + Cl2

b)

KCl + Cu

c)

KCl2 + Cu

d)

KCuCl2

21.

Predict the product(s)


C2H6 + O2 --> ???????

a)

H2O + CO2

b)

H2O

c)

CO2

d)

C2H6O2

22.

The reactivity of metals that determines whether a single replacement reaction will occur is called

a)

activity series of metals

b)

single replacement reaction chart

c)

reactivity order of metals

d)

none of the above

23.

Pb + KCl -->

How will we know if this reaction will occur?

a)

If Pb is LOWER than K

b)

If Pb is HIGHER than K

c)

If Pb is LOWER than Cl

d)

If Pb is HIGHER than Cl

e)

There is no way to know without doing the reaction

24.

Al + KCl -->


Will this reaction occur?

a)

Yes

b)

No

c)

Sometimes

d)

There is no way to know without doing the reaction

25.

Ca + FeCl2 -->


Will this reaction occur?

a)

Yes

b)

No

c)

Sometimes

d)

There is no way to know without doing the reaction

26.

What kind of reaction is this:


Hydrogen Peroxide breaks down to form Water and Hydrogen gas

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

27.

What kind of reaction is this:


Propane (C3H8) and Oxygen gas react to form Carbon Dioxide and Water

a)

Combination

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

28.
In ___ bonds, the electrons are being SHARED, usually between 2 non-metals.
a)
Ionic
b)
Compound
c)
Covalent
d)
Created
29.

Which best represents a balanced equation?

a)

120 grams of carbon plus 20 grams of oxygen → 200 grams of carbon dioxide

b)

120 grams of carbon plus 50 grams of oxygen → 200 grams of carbon dioxide

c)

120 grams of carbon plus 80 grams of oxygen → 200 grams of carbon dioxide

30.

What coefficient for O2 demonstrates the law of conservation of mass?


CH4(g) + __O2(g) → CO2(g) + 2H2O(g)

a)

1

b)

2

c)

3

d)

4

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