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WorksheetsChemical Reactions and Equations
Total questions: 33
Worksheet time: 29mins
Name
Class
Date
1.
AB + CD →AD + CB
a)
Double Replacement
b)
Single Replacement
c)
Synthesis
d)
Decomposition
2.
Which of the following is an example of synthesis?
a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
3.
Which of the following is the general formula for a decomposition reaction?
a)
A + B → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
4.
2NaCl →2Na +Cl2
a)
Synthesis Reaction
b)
Decomposition Reaction
c)
Single Displacement Reaction
d)
Double Displacement Reaction
5.
Which of the following is a sign that a chemical reaction has occurred?
a)
change in shape
b)
melting
c)
formation of a gas
d)
dissolving
6.
Which is a chemical change?
a)
freezing fruit juice
b)
slicing a potato
c)
boiling water
d)
copper metal turning green
7.
What causes a chemical reaction when you prepare scrambled eggs?
a)
cracking the eggs in a pan
b)
heating the eggs in a pan
c)
putting pepper on the eggs
d)
putting the eggs on a plate
8.
What type of reaction is illustrated below?
Zn + H2S --> ZnS + H2
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement
9.
The left side of the equation below is called
a)
Products
b)
Reactants
10.
The right side of the equation below is called the
a)
products
b)
reactants
11.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
12.
What type of chemical reaction is this one?
CUO + CO2 --> CuCO3
CUO + CO2 --> CuCO3
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
13.
What type of chemical reaction is this one?
C2H2 + O2 --> CO2 + H2O
C2H2 + O2 --> CO2 + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
14.
How do the following two elements bond together?
Cr3+ O2-
Cr3+ O2-
a)
CrO
b)
Cr3O2
c)
Cr2O3
d)
CrO3
15.
Fe2O3
a)
iron oxide
b)
iron oxygen
c)
iron II oxide
d)
iron III oxide
16.
An ion with a negative charge is a/an
a)
anion
b)
cation
17.
An ion with a positive charge is a/an
a)
anion
b)
cation
18.
What is the name of Fe(OH)3
a)
iron (II) hydroxide
b)
iron (III) hydroxide
c)
iron trihydroxide
d)
iron hydroxide
19.
Name the following ionic compound: MgSO4
a)
magnesium sulfoxide
b)
magnesium sulfide
c)
magnesium sulfate
d)
magnesium oxide
20.
Name this compound:
KF
KF
a)
Potassium fluoride
b)
Potassium fluorite
c)
Fluorine potasside
d)
Potassium fluorate
21.
Name the following ionic compound: BeCl2
a)
beryllium chlorine
b)
beryllium II chloride
c)
beryllium chloride
d)
beryllium dichloride
22.
Which of these combinations is an ionic compound made of?
a)
Metal and Metal
b)
Nonmetal and Nonmetal
c)
Metal and Nonmetal
d)
Cation and Cation
23.
What formula results when Ca+2 and Br- ions bond?
a)
Ca2Br2
b)
CaBr
c)
Ca(br)2
d)
CaBr2
24.
How many Al atoms are in this compound? 4Al2O3
a)
2
b)
8
c)
6
d)
4
25.
Which part of the chemical equation is the product?
C6H12O6 + 6O2 ---> 6CO2 + 6H2O
C6H12O6 + 6O2 ---> 6CO2 + 6H2O
a)
C6H12O6 + 6O2
b)
6CO2 + 6H2O
26.
How many F atoms are in this compound?
6MgF2
6MgF2
a)
2
b)
6
c)
8
d)
12
27.
A chemical reaction is ___________________.
a)
when substances undergo changes that result in a new substance
b)
a characteristic of a substance that can be observed without changing the substance into another substance
c)
when substances undergo changes that alter their form or physical appearance
28.
What are the products of the chemical reaction pictured?
a)
CH4 and CO2
b)
CH4 and O2
c)
CO2 and H2O
d)
O2 and H2O
29.
What are the reactants in the chemical equation pictured?
a)
CH4 and CO2
b)
CH4 and O2
c)
CO2 and H2O
d)
O2 and H2O
30.
What is the small number written after a chemical symbol called?
a)
Coefficient
b)
Subscript
c)
Product
d)
Reactant
31.
What does the ARROW in a Chemical Equation mean?
a)
"yields"
b)
"equals"
c)
"moves over"
32.
The Law of Conservation of Mass states that ____________________.
a)
matter can NOT be created, but can be DESTROYED
b)
matter can NEITHER be created or destroyed
c)
matter can be CREATED, but NOT destroyed
33.
A __________is a short, easy way to show a chemical reaction, using symbols
a)
Chemical Equation
b)
Chemical change
c)
Chemical reaction
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