Chemistry Form 4

Form 4 CHEMISTRY Trinity Term                      WEEK: May 18 to May 22

Teacher: Leon Abel                                                  Email: leonabel8@gmail.com

Chemical Equations and Reactions – Read carefully then Answer ALL of the following questions:

1.     Which law do we make use of when balancing chemical equations?

2.     Balance the following chemical equations:

a.      Aluminum + oxygen à aluminum oxide

b.     CH₄(g) + O₂(g) à CO₂(g) + H₂O(l)

c.      NaOH(aq) + HCl(aq) à NaCl(aq) + H₂O(l)

d.     Sodium + water à sodium hydroxide + hydrogen

3.     Balance the following equations then classify the reactions using the words in the square bracket.             [ synthesis, decomposition, single displacement, ionic precipitation, neutralization ]

a.      H₂CO₃(g) à H₂O(l) + CO₂(g)

b.     Fe(s) + Cl₂(g) à FeCl₃(s)

c.      Zn(s) + HCl(aq) à ZnCl₂(aq) + H₂(g)

d.     NaOH(aq) + H₂SO₄(aq) à Na₂SO₄(aq) + H₂O(l)

e.      AgNO₃(aq) + MgBr₂(aq) à AgBr(s) + Mg(NO₃)₂(aq)