POP QUIZ Name: Date: Class:
Balance the following equations by equalising the atom numbers on both sides of the equation.
1. H2 + F2 H F
2. N2 + H2 N H3
3. Al + O2 Al2O3
4. Mg + H2 SO4 Mg SO4 + H2
5. C + Cl2 C Cl4
6. P H5 + O2 P2 O5 + H2O
The following elements form ionic compounds. Figure out the charge of the individual ions and set up the chemical formula (ratio of ions in the compound)
1. Al + S 2. Li + N2 3. Ca + P
/6 Marks
/9 Marks
1. Balance the following equations by equalising the atom numbers on both sides of the equation.
(a) H2 + F2 H F (b) N2 + O2 N O2
(c) Ca + O2 Ca O (d) Na + Br2 Na Br
2. Which of the following equations are not balanced?
(a) C + O2 C O2
(b) Al + O2 Al2 O3
(c) C + Cl2 C Cl4
(d) H Cl + Na OH Na Cl + H2O
3. Balance the following equations by equalising the atom numbers on both sides of the equation.
(a) H2 + O2 H2O (b) N2 + H2 N H3
(c) N2 + O2 N O (d) Ca + O2 Ca O (e) Na + Cl2 Na Cl (f) H2 + O2 H2 O2
(g) Al + O2 Al2O3
(h) N2 + Cl2 N Cl3
(i) Mg + H2 SO4 Mg SO4 + H2
(j) H2O + S O2 H2 SO4
(k) C + Cl2 C Cl4
(l) P4 + Cl2 P Cl3
(m) Pb (OH)2 Pb O + H2O
(n) Ca (OH)2 + S O2 Ca SO4 + H2O (o) C2 H4 + O2 C O2 + H2O (p) Mg + C O2 Mg O + C
(q) H2 O2 H2O + O2
(r) Fe2 O3 + C Fe + C O (s) P H3 + O2 P2O3 + H2O (t) P H5 + O2 P2 O5 + H2O