NEW
Font size
WorksheetsChemical Reactions
Total questions: 20
Worksheet time: 25mins
The _________ symbol separates the reactants from the products and means "yields".
+
(s)
→
(g)
A balanced chemical equation is a direct presentation of the ___________.
law of conservation of momentum
law of conservation of energy
law of conservation of mass
ideal gas law
Balance the chemical equation shown below. What is the coefficient in front of O2(g)?
Fe(s) + O2(g) → Fe(2)O3(s)
2
3
4
5
Which is the correct atom count for the reactant side of the chemical equation?
CH4 + 2 O2 → CO2 + 2 H2O
C=4
H=4
O=4
C=1
H=4
O=2
C=1
H=4
O=2
C=1
H=4
O=4
Which compound contains the greatest number of elements?
5CH4
Fe2O3
C6H12O6
C8H10N4O2
Fill in the blanks with coefficient:
PCl5 +____ H2O →____ HCl + H3PO4
4, 5
1, 6
3, 8
2,2
Which problem is balanced?
PbO2 + 2H2 → H2SO4
SO2 + H20 → H2SO4
2Na + 2H2O → 2NaOH + H2
2Na + 2H2O → 2NaOH + H
Balance this equation
__Zn +__HCl →__ZnCl2 +__H2
1,1,2,1
1,1,1,2
1,2,1,1
2,1,1,1
Balance this equation
__N2 + __H2 → __NH3
1,2,3
1,3,2
1,1,2
2,1,1
How many hydrogen atoms are in: 3(NH₄)₂CrO₄
4
6
8
24
Balance this equation:
P4 + O2 → P2O3
3 P4+ O2 → 2 P2O3
P4+ O2 → 2 P2O3
P4+ 3 O2 → 2 P2O3
P4+ 2 O2 → 3 P2O3
The following chemical equation is classified as a ______________.
CaCO3 → CaO + CO2
synthesis reaction
decomposition reaction
single-replacement reaction
double-replacement reaction
Which chemical reaction takes place when 2 substances react to form a single product?
Decomposition
Double Replacement
Single Replacement
Synthesis
Al (s) + HCl (aq) → AlCl3 (aq) + H2 (g)
What are the products of this reaction?
Cu+ AgNO3 →
Cu(NO3)2+Ag
Cu + NO3 + Ag
CuAg+NO3
Cu+ AgNO3
According to the activity series, which of the following single replacement reactions can occur?
Ca + Al2(SO4)3
Fe + NaOH
Ni + MgSO4
Al + KOH
What are the products when Magnesium Carbonate decomposes? MgCO3 -->
MgCO3 + O2
MgO + O2
MgO+ CO2
MgC + O2
What are the products of this reaction:
C2H4 + O2→
C2O2 + H4
CO2 + H2 + O2
CO + H
CO2 + H2O
No Reaction
