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| Question | Answer |
| Name the salt produces when hydrochloric acid reacts with magnesium hydroxide. | Magnesium chloride |
| Name the salt produced when nitric acid reacts with sodium hydroxide. | sodium nitrate. |
| When sulphuric acid react is with copper oxide it produces. | copper sulphate and water |
| Write down the difference between an endothermic and exothermic reaction. | An exothermic reaction releases heat however an endothermic reaction takes in heat. |
| Describe what happens to the temperature in an exothermic reaction. | the temperature goes up as the heat is released. |
| What is neutralisation? | a reaction between an acid and alkali is called neutralisation. |
| Complete the sentence Acid turns blue litmus .... | red. |
| Complete the equation acid +alkali ---> | a salt + water. |
| Complete the equation acid + metal carbonate ----> | a salt + water + carbon dioxide |
| Vinay has a solution which he thinks might be acidic. Describe two tests he could do to see if it is acidic or not. | He could use universal indicator and could also react the solution with a metal and see if it fizzes. |
| Describe how would you make an indicator for red cabbage. | Cut the cabbage into small pieces and add boiling water to it. Use the filter paper to filter the solution. |
| List three factors that affect the rate of reaction. | Temperature, surface area and concentration. |
| How does increasing the concentration effects the rate of reaction, explain your answer using the idea of collision theory. | the more concentrate solution is the more it reacts. this is because there are more particles in the same volume. Therefore, the particles collide more often in a certain time. |
| What is activation energy? | Activation energy is the minimum amount of energy that is needed in order for a reaction to occur. |
| Give One Example of an Exothermic Reaction? | combustion or reaction between an acid and magnesium.ive One Example of an Endothermic Reaction? |