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POP QUIZ Name: Date: Class: Balance the following equations by equalising the atom numbers on both sides of the equation. 1. H

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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

(2)

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

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