WorksheetsEOC-unit 5- Reactions-EdoM
Total questions: 25
Worksheet time: 14mins
Which coeficient is needed to balance the equation balenced in the following equation?
1 Na3PO4 + ___KOH ---------> 3 NaOH + 1 K3PO4
2
1
3
4
1 MgF2 + 1 Li2CO3 -------> 1 MgCO3 + 3 LiF
What coeficient is missing in the following equation to be balanced?
1 P4 + 3 O2 --------> ___ P2O3
2
3
5
6
2 RbNO3 + 1 BeF2 ---------->1 Be(NO3)2 + ___ RbF
2 HCN + 1 CuSO4 ----------> ___ H2SO4 + 1 Cu(CN)2
A ____________ change is a change that does not alter the chemical makeup of the substance. An example of this would be ____________________.
A ____________ change is a change that produces new substances. An example of this would be ___________.
___Pb(OH)2 + ___ HCl --------> ___ H2O + ___ PbCl2
Solid aluminum reacts with oxygen gas to form solid aluminum oxide. Chose the right chemical equation
Al + O2 -------> AlO3
Al3 + O2 ---------> Al2O3
2Al + 3O2 -------> 2AlO3
Al3 + O2 -------> Al3O2
1. How many atoms of hydrogen are present in 2 molecules of ammonium dichromate? 2(NH4)2Cr2O7
4
8
10
16
1. How many atoms of carbon are present in 4 molecules of aluminum carbonate? 4Al(CO3)3
3
7
12
16
1. Given the following reaction, which substance(s) are the reactants?
2NaCl → 2Na + Cl2
Na + Cl2
Na
Cl
NaCl
1. Given the following reaction, which substance(s) are the products?
2 Al + 6 HCl -------------> 3 H2 + 2 AlCl3
Al and HCl
HCl
AlCl3
H2 and AlCl3
Identify the following as either a chemical or physical change:
Mowing the Lawn :
Physical change
Chemical change
Identify the following as either a chemical or physical change:
Cutting a piece of wood
Physical change
Chemical change
Identify the following as either a chemical or physical change:
Baking a Cake
Physical change
Chemical change
Identify the following as either a chemical or physical change:
Cracking Eggs:
Physical change
Chemical change
Identify the following as either a chemical or physical change:
Toasting Bread
Physical change
Chemical change
Identify the following as either a chemical or physical change:
Digesting Food:
Physical change
Chemical change
