WorksheetsChemical Equations and Reactions
Total questions: 14
Worksheet time: 9mins
Which pair of substances represents the products in the following chemical equation:
Zn + 2HCl → ZnCl2 + H2
Zn and HCl
Zn and ZnCl2
ZnCl2 and H2
Zn and H2
Chemical equations are balanced by using
subscripts
coefficients
exponents
variables
If an equation is balanced properly, both sides of the equation must have the same number of
atoms
molecules
coefficients
When the following chemical equation is properly balanced, what will be the coefficient in front of Cl2?
Fe + Cl2 → FeCl3
1
2
3
4
When the following chemical equation is properly balanced, what will be the coefficient in front of Na3PO4?
CaCl2 + Na3PO4 → Ca3(PO4)2 + NaCl
1
2
3
4
What is the sum of the coefficients when the following chemical equation is properly balanced?
Al + HCl → AlCl3 + H2
6
9
10
13
Which of the following cannot be broken down by a chemical process?
water
ammonia
methane
carbon
What type of chemical reaction is represented by the following chemical equation?
2NaHCO3 → Na2CO3 + CO2 + H2O
Synthesis
Decomposition
Single Replacment
Double Replacement
What type of chemical reaction is represented by the following chemical equation?
Fe + 3AgCl → FeCl3 + 3Ag
Synthesis
Decomposition
Single Replacement
Double Replacement
Will the following reaction occur?
3Ca + 2Fe(NO3)3 → 3Ca(NO3)2 + 2Fe
yes
no
impossible to determine
Which Reference Table is used to determine which product of a double replacement reaction is the precipitate?
E
F
J
S
What would be the precipitate in the reaction between Ca(NO3)2 and Na2S?
CaNa2
CaS
NaNO3
NaNaNa
Why does the following chemical equation represent a double replacement reaction?
Ca(OH)2 + 2HCl → CaCl2(aq) + 2H2O(l)
water is produced
a gas is produced
a precipitate is produced
an ionic compound is produced
Given: 4Al + 3O2 ---> 2X Which compound is represented by X?
AlO
Al2O2
Al2O
Al2O3
