GRADE 8 SCIENCE
Chemical Reaction | formulae & mass
Activity 1 - Converting Word Equations
Write the balanced chemical equation with state symbols under each word equation.
1.
nitrogen dioxide + water --> nitrous acid + nitric acid
2. manganese dioxide + hydrochloric acid --> manganese chloride + water + chlorine
3.
HEAT
iron (III) oxide + carbon ------------------> iron + carbon dioxide
GRADE 8 SCIENCE
Activity 2 - Structural Formulae
Complete the table below.
Name
Chemical Formula
calcium chloride
CaCl2
hydrochloric acid
HCl
boron trifluoride
MgO
thioacetamide
C2H5NS
Structural Formula