Worksheetsreactions
Total questions: 18
Worksheet time: 24mins
Name
Class
Date
1.
What reaction type is characterized by the reactant breaking down as the reaction progresses?
a)
Synthesis
b)
Decomposition
c)
Combustion
d)
Double Replacement
2.
What is the term for the → sign in a reaction?
a)
makes
b)
produces
c)
yields
d)
all are correct
3.
Which set of coefficients properly balances the reaction below?
_Cu + _H2O →_ CuO3 + _H2
_Cu + _H2O →_ CuO3 + _H2
a)
1,3,1,5
b)
2,6,2,6
c)
1,3,1,3
d)
1,2,3,4
4.
What is the coefficient of silver nitrate in this reaction?
_AgNO3 + _H2S →_Ag2S+_HNO3
a)
1
b)
2
c)
3
d)
4
5.
What type of reaction is displayed below?
HCl + NaOH → NaCl + H2O
HCl + NaOH → NaCl + H2O
a)
Neutralization
b)
Combustion
c)
Double Replacement
d)
Decomposition
6.
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
7.
Which is the name of the kind of solid substance formed in this figure?
a)
aqueous
b)
precipitate
c)
acid
d)
synthesis
8.
Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas this happens because?
a)
Magnesium is higher on the reactivity series then hydrogen
b)
magnesium is more reactive than hydrogen
c)
magnesium is able to break the bond between HCl and form MgCl2
d)
both b and c are correct
9.
Describes the number of molecules in a compound and is used to balance a chemical reaction.
a)
coefficient
b)
subscript
c)
superscript
d)
SI unit
10.
Provides evidence that a chemical reaction has occurred.
a)
dissolving
b)
melting
c)
formation of a gas
d)
bending
11.
What type of chemical reaction takes place when fluorine reacts with sodium bromide?
a)
single replacement
b)
double replacement
c)
combustion
d)
synthesis
12.
Predict the following reaction
NaCl + Ca(NO3)2 -->
NaCl + Ca(NO3)2 -->
a)
no reaction both products are aqueous
b)
Calcium chloride and sodium nitrate are produced
c)
sodium nitrate is a solid formed
d)
calcium chloride is the solid formed
13.
The word oxidation describes
a)
gain of electrons
b)
loss of electrons
c)
number of electrons remains the same
d)
number of electrons transfered
14.
a substance that is formed as the result of a chemical reaction
a)
Product
b)
Reactant
c)
Starters
d)
Enders
15.
the starting materials in a chemical reaction
a)
Products
b)
Reactants
c)
Starters
d)
Enders
16.
type of reaction in which a compound is broken down into its simple elements
a)
Double Displacement
b)
Single Displacement
c)
Synthesis
d)
Decomposition
17.
What types of reactions absorb and release heat?
a)
acidic and basic
b)
endothermic and exothermic
c)
endothermic and heat transfusion
d)
covalent and ionic
18.
Which of the following IS a physical change?
a)
Getting a haircut
b)
Rusty metal
c)
sour milk
d)
A compound
100 %
