| Term | Definition |
|---|
| chemical change | A change which makes a new substance, e.g. coal burning |
| salt + hydrogen | acid + metal |
| physical change | A change in which no new substance is made. The substance just changes to a different state, e.g. water boiling |
| product | the new substance that is made in a reaction |
| salt | a substance made when an acid and a base react together. |
| Irreversible | A change which cannot be changed back from it's original form. |
| reversible | A change which can be changed back to its original form. |
| base | The oxide, hydroxide or carbonate of metal. |
| neutralisation | the chemical reaction of an acid with a base in which they cancel each other out. |
| incomplete | if there is not enough oxygen the combustion is |
| Acid | The chemical opposite of an alkali. It has a ph number less than 7 |
| NPK | Tells you how much nitrogen, phosphorus and pottasium is in a fertiliser |
| combustion | the reaction which occurs when a substance burns in oxygen giving out heat energy |
| exothermic | A reaction that gives out heat energy to its surroundings |
| salt + water | acid + metal oxide |
| Endothermic | A reaction that takes in heat energy from it's surroundings |
| Oxidation | The reacton when oxygen is added too a substance |
| displacement | when one element takes the place of another in a compound |
| sulphates | salts made from sulphuric acid |
| salt + carbon dioxide + water | acid + metal carbonate |
Combine with other sets
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