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Description
Flashcards by Ella Maggs, updated more than 1 year ago
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Created by Ella Maggs
over 8 years ago
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| Question | Answer |
| What is the word equation for neutralisation? | acid + base --> salt + water |
| Substances with a pH less than 7 are? | Acids |
| Substances that have a pH higher than 7 are? | Alkalis |
| Neutral substances have a pH of? | 7 |
| Why does Universal Indicator show a gradual range of colour changes? | Universal indicator contains a mixture of different indicators. |
| How is the concentration of an acid determined? | It is determined by the concentration of H+ ions. |
| If acids have H+ ions what ions does a alkali have? | A alkali has OH- ions (hydroxide ions). |
| What is a base? | Bases are substances the reacted with acids to neutralise them, if they are soluble in water they are called alkalis. |
| Acid ions reacting with alkali ions, what is the equation? | H+ + OH- <--> H2O |
| What is the longer word equation for making salt, involving metal carbonate? | acid + metal carbonate --> salt + water + carbon dioxide |
| What is the salt name for sulphuric acid? | The salt name is sulphate. |
| What is the salt name for nitric acid. | The salt name is nitrate. |
| What is the salt name for hydrochloric acid? | The salt name is chloride. |
| What is the salt name for phosphoric acid? | The salt name is phosphate. |
| Salt names have two parts, which part reveals the acid it has been made from? sodium hydroxide + hydrochloric acid -> sodium chloride + water. | The chloric from hydrochloric acid. |
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