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WorksheetsChemical reaction (with predicting single & double replacement
Total questions: 24
Worksheet time: 18mins
Name
Class
Date
1.
Which is the name of the kind of solid substance formed in this figure?
a)
aqueous
b)
precipitate
c)
acid
d)
synthesis
2.
An element plus additional element reacts to form one product is an example of which type of chemical reaction?
a)
combustion
b)
decomposition
c)
synthesis
d)
single replacement
3.
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
4.
Which type of reaction takes place in the presence of oxygen and produces carbon dioxide and water?
a)
double replacement
b)
decomposition
c)
combustion
d)
single replacement
5.
Provides evidence that a chemical reaction has occurred.
a)
dissolving
b)
melting
c)
formation of a gas
d)
bending
6.
What is the probable product of a double-replacement reaction?
a)
A new compound and a replaced metal
b)
A new compound and a replaced nonmetal
c)
2 different compounds 1 aqueous and 1 that is a solid, liquid or gas
d)
A single compound
7.
What type of chemical reaction takes place when fluorine reacts with sodium bromide?
a)
single replacement
b)
double replacement
c)
combustion
d)
synthesis
8.
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
9.
A compound is reacted and forms two new substances. What type of reaction is this?
a)
combustion
b)
synthesis
c)
decomposition
d)
single replacement
10.
Describes the number of atoms in a compound of each element.
a)
coefficient
b)
superscript
c)
subscript
d)
SI unit
11.
What are the correct coefficients when this equation is balanced?
KClO3 --> KCl + O2
KClO3 --> KCl + O2
a)
2,2,2
b)
2,2,3
c)
1,2,3
d)
3,3,3
12.
Which of the following is not evidence of a chemical reaction?
a)
Formation of a precipitate
b)
Production of gas
c)
Change in temperature
d)
Change in state of matter
13.
Balance the following equation:
____MgO + ____H2O → ____Mg(OH)2
____MgO + ____H2O → ____Mg(OH)2
a)
1,1,1
b)
1,2,2
c)
2,3,4
d)
2,2,2
14.
Which type of reaction requires the activity series?
a)
synthesis
b)
decomposition
c)
single replacement
d)
double replacement and single replacement
15.
What is the charge of Iron in this compound. (Hint: think criss cross method):
Fe3(PO4)2
a)
3+
b)
2+
c)
1+
d)
6+
16.
Predict the products for the this Single Replacement reaction:
K + HCl →
a)
KCl + H2
b)
KHCl
c)
KH + Cl2
d)
HCl + K2
17.
Predict the products for the this Double Replacement reaction:
AgNO3 + KCl →
a)
AgCl + KNO3
b)
AgK + ClNO3
c)
KAg + NO3Cl
d)
AgCl + 3 KNO
18.
Complete the balanced equation for this Double Replacement reaction.
3 NaOH + Fe(NO3)3 →
a)
NaFe + OH(NO3)3
b)
NaNO3 + Fe(OH)3
c)
3 NaNO3 + Fe(OH)3
d)
3 NaFe + 3 (OH)NO3
19.
What type of reaction does this graphic represent?
a)
Decomposition
b)
Double-replacment
c)
Single-replacment
d)
Synthesis
20.
What type of reaction does this graphic represent?
a)
Decomposition
b)
Double-replacement
c)
Single-replacment
d)
Synthesis
21.
What type of reaction does this graphic represent?
a)
Decomposition
b)
Double-replacment
c)
Single-replacement
d)
Synthesis
22.
What type of reaction does this graphic represent?
a)
Decomposition
b)
Double-replacment
c)
Single-replacment
d)
Synthesis
23.
In Lavoisier's experiment with the heating of mercury (II) oxide, what did he observe concerning the mass of the liquid mercury and gaseous oxygen produced? The mass of the products was _____ the mass of the reactants.
a)
greater than
b)
equal to
c)
less than
d)
none of these
24.
Which of the following is balanced?
a)
CaBr2 + Na2(CO3) → Ca(CO3) + NaBr
b)
CaBr2 + Na2(CO3) → Ca(CO3) + 2NaBr
c)
CaBr2 + 2Na2(CO3) → Ca(CO3) + NaBr
d)
none of these
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