WorksheetsChemical Reactions by Brian Le
Total questions: 25
Worksheet time: 13mins
Name
Class
Date
1.
Synthesis, decomposition, and double replacement are all redox reactions.
a)
True
b)
False
2.
A metal oxide and water create...?
a)
Metal Hydroxide
b)
Metal Carbonate
c)
Metal Chlorate
d)
Acid
3.
A metal oxide and carbon dioxide create...?
a)
Metal Hydroxide
b)
Metal Carbonate
c)
Metal Chlorate
d)
Acid
4.
A metal chlorate decomposes into...?
a)
Metal oxide and carbon dioxide
b)
Metal oxide and water
c)
Metal chloride and oxygen
d)
Metal oxide and chloride
5.
A nonmetal oxide and water create?
a)
Nonmetal hydroxide
b)
Acid
c)
Acid and water
d)
Nonmetal with peroxide
6.
A metal can always replace another metal in single replacement reactions because they're cations.
a)
True
b)
False
7.
What is created when an alkali metal replaces hydrogen in water?
a)
Metal hydroxide and hydrogen
b)
Metal oxide and hydrogen
c)
Metal water and hydrogen
d)
No reaction
8.
What is created when an alkaline earth metal replaces hydrogen in water?
a)
Metal hydroxide and hydrogen
b)
Metal oxide and hydrogen
c)
Metal water and hydrogen
d)
No reaction
9.
When carbon-hydrogen based substances are combusted, the products are always CO2 and H2O.
a)
True
b)
False
10.
Which element is always reacting in combustion?
a)
Carbon
b)
Hydrogen
c)
Oxygen
d)
All of the Above
11.
For single replacement reactions, name the most electronegative nonmetal to the least:
a)
F, Cl, Br, I
b)
Cl, Br, I, F
c)
F, Br, Cl, I
d)
F, I, Br, Cl
12.
When predicting double replacements, the "(S)" on the products side stands for...?
a)
Solution
b)
Solid
c)
Solvent
d)
Salt
13.
A metal hydroxide decomposes into...?
a)
Metal oxide and hydrogen
b)
Metal oxide and water
c)
Water, oxygen, and metal
d)
Metal and hydroxide
14.
A metal carbonate decomposes into...?
a)
Metal and carbonate
b)
Metal and carbon dioxide
c)
Metal Oxide and carbon dioxide
d)
Metal oxide and carbon
15.
A metal chloride and oxygen create?
a)
Metal oxide and chlorine
b)
Metal Chlorite
c)
Metal, chlorine, and oxygen
d)
Metal Chlorate
16.
What switches in a double replacement reaction?
a)
Cations
b)
Anions
c)
Both
d)
None
17.
What happens to the atom when it is oxidized?
a)
Gains electrons
b)
Loses electrons
18.
What happens to the atom when it has a reduction?
a)
Gains electrons
b)
Loses electrons
19.
The oxidation number of magnesium in Hg(NO3)2 is...?
a)
0
b)
1
c)
2
d)
Can't be determined yet
20.
Which of these elements does not have an "always" oxidation rule?
a)
Oxygen has a -2 oxidation number
b)
Hydrogen has a +1 oxidation umber
c)
Fluorine has a -1 oxidation number
d)
Nitrogen has a +3 oxidation number
21.
The oxidation number of one nonmetal in a covalent bond is its own charge when its...?
a)
More reactive
b)
Bigger in atomic radius
c)
More electronegative
d)
Oxygen or Fluorine
22.
O2 has an oxidation number of...?
a)
-2
b)
1
c)
+2
d)
0
23.
An oxyacid decomposes into...?
a)
nonmetal oxide and water
b)
nonmetal oxide and hydrogen
c)
nonmetal hydroxide and hydrogen
d)
acid and oxygen
24.
After a double replacement reaction, the compound H2CO3 is one of the products.
The compound must...?
The compound must...?
a)
Decomposes into H2O and CO2
b)
Decomposes into H2 and CO3
c)
Decomposes into H2 + O3 + C
d)
be finished
25.
What can you do to balance chemical equations?
I. Add subscripts
II. Add coefficients anywhere
III. Add coefficients only in front of formulas
IV. Add and remove elements
I. Add subscripts
II. Add coefficients anywhere
III. Add coefficients only in front of formulas
IV. Add and remove elements
a)
Only I
b)
Only III
c)
Only I, II, III
d)
Only III and IV
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