Why do you think blowing on a candle flame makes it go out? Since there is a flame in this experiment, be sure that a teacher, parent, or other adult works with you. Wear goggles when doing this ...

analysis and evaluation of these experiments. There are three core practical activities in the Chemical changes section: investigate the change in pH when adding powdered calcium hydroxide or ...

You could be asked questions about the apparatus, methods, safety precautions, results, analysis and evaluation of these experiments ... practicals in the Chemical Changes section: Required ...