Investigating the action of heat on copper sulphate Diagram Method: A clean, dry boiling tube is weighed. About 20g of copper sulphate is placed in the tube which is then weighed again. The apparatus is now set up as shown … Continue reading →
(The experiment described below can also be done using chopped up copper foil instead of magnesium, but because copper does produce smoke when heated the crucible lid is not needed) Experiment to see if magnesium changes in mass when heated … Continue reading →
A chemical reaction ALWAYS forms a new substance. Signs that show a chemical reaction has taken place are: i. A change in colour ii. A change in temperature (usually gets hot) Types of reaction Burning Decomposition Oxidation and reduction Neutralization … Continue reading →
Rocks Most minerals come from rocks in the ground. Rocks from which we can obtain a metal are known as ores (eg Iron ore is a rock from which we can obtain iron). Some rocks (like chalk or limestone) are … Continue reading →
Chemical change The three states of matter Change in Mass The Water Cycle Heating copper sulphate Heating magnesium ribbon If a solid chemical is heated several things could happen: It could melt (change from a solid to a liquid) … Continue reading →
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