WorksheetsWriting formula and equations
Total questions: 8
Worksheet time: 12mins
Name
Class
Date
1.
Balance this equation:
2Li + Cl2 -> LiCl
2Li + Cl2 -> LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li + Cl2 -> 2LiCl
2.
Which number should go in the blank?
_ H2 + O2 -> 2 H2O
_ H2 + O2 -> 2 H2O
a)
1
b)
2
c)
3
d)
0
3.
Magnesium (Mg) can be burned in oxygen (O2) to produce solid magnesium oxide (MgO).
a)
Mg(s) + O2(g)→ MgO(s)
b)
Mg(s) + O(g) → MgO(s)
c)
Mg(s) + CO2(g) → MgO(s) + C(s)
d)
Mg(s) + O2(g) → Mg2O2(s)
4.
Translate the word equation below:
Nitrogen (N2)reacts with Hydrogen (H2) to form Ammonia (NH3).
a)
N → H + NH3
b)
N2 + H2 → NH3
c)
N + H → NH3
d)
N2 → H2 + NH3
5.
Mg2+ and Cl- create...
a)
Mg2Cl
b)
MgCl2
c)
Mg2Cl2
d)
MgCl
6.
Ca2+ and N3- create...
a)
Ca2N3
b)
Ca3N2
c)
CaN3
d)
Ca2N
7.
Na+ and Cl- create...
a)
Na2Cl
b)
NaCl2
c)
Na2Cl2
d)
NaCl
8.
Balance the following equation:
___ Mg+ ___ O2→___ MgO
a)
1, 1, 3
b)
2, 1, 2
c)
1, 2, 1
d)
2, 2, 2
100 %
