Chemical Reactions and Equations
Your child will learn to read chemical change like a sentence and balance it without fear. This opening science chapter typically contributes about five marks, often a three-mark equation-writing and balancing question. Learners convert word equations into symbol equations that obey mass conservation, then classify combination, decomposition, displacement, double displacement, precipitation, oxidation and reduction with laboratory and everyday illustrations. Heating of lead nitrate, rusting of iron and rancidity of oil prove that balancing precedes control of reactions. Three misconceptions bi
Try a free lesson