701405
Description
Flashcards by jennifersnowbell, updated more than 1 year ago
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Created by jennifersnowbell
about 10 years ago
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| Question | Answer |
| List 8 properties of Acids | 1.Have a low PH (turn PH paper red/orange) 2. Sour 3. Can Kill Cells 4. Corrosive 5. Make Hydrogen 6.Make Carbon dioxide 7. Have hydrogen in them and acid in their name. 8. Neutralised by bases |
| List 6 properties of Alkalis | 1. High PH (turn filter paper blue/purple) 2. Soapy 3.Corrosive 4. Neutralise acids to make salt 5. Soluble bases 6. Bases are Metal oxides, hydroxides and carbonates |
| Where is...on the PH Scale? 1. Acid 2.Neutral 3. Alkali | 1. Lower than 7 2. 7 3. Higher than 7 |
| How would you measure the pH of an unknown liquid. | Indicator- Mixture of dyes which changes colour depending on whether it is an acid or alkali. (ie. universal indicator, litmus paper) |
| How can indigestion be helped using neutralisation? | Indigestion is caused by too much hydrochloric acid in the stomach.The excess acid must be neutralised by a medium strength base. |
| Acid + Base= | A Salt + Water |
| What happens to a crop if it is grown in the wrong pH? | Poor growth. Liming the soil neutralises the acid |
| Carbon Dioxide + Water= | Carbonic Acid |
| What does acid rain do you metal? | Acid rain is acidic because of Co2 in the air. It corrodes the metal with devastating effects. |
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