958760
| Question | Answer |
| Metal oxides and metal hydroxides are what? | Metal oxides and metal hydroxides are bases. |
| A few bases are soluble in water, and are called what? | A few bases are soluble in water, and are called alkalis. |
| Give two examples of bases that are soluble in water. | Sodium hydroxide and calcium hydroxide. |
| When does neutralisation take place? | Neutralisation takes place when an acid and a base react to make salt and water. |
| What is the word equation for neutralisation? | The word equation for neutralisation is: acid + base → salt + water |
| Some indicators show a sudden colour change at one pH value. What does universal indicator show? | Some indicators show a sudden colour change at one pH value. Universal indicator shows a gradual range of colour changes. |
| Why does it do this? | As it contains a mixture of different indicators. |
| In solution, all acids contain which ions? | In solution, all acids contain H+ ions (hydrogen ions). |
| What is the pH of an acid determined by? | The pH of an acid is determined by the concentration of H+ ions. |
| The higher the concentration the lower or higher the pH? | The higher the concentration the lower the pH. |
| Fill the gaps: Neutralisation leaves .. .... H+ ions. | Neutralisation leaves no free H+ ions. |
| Alkalis contain which ions? | Alkalis contain OH- ions (hydroxide ions). |
| Neutralisation involves what reaction? | Neutralisation involves this reaction: H+ + OH- ↔ H2O |
| What do acids react with to form salts? | Acids react with bases and metal carbonates to form salts. |
| What are the word equations for making salt? | The word equations or making salt are: acid + base → salt + water acid + metal carbonate → salt + water + carbon dioxide |
| Salt names have two parts - what does the second part of the name show? | Salt names have two parts - the second part of the name shows which acid it has been made from. |
| Give the second part of the salt name for each of these common acids: Sulfuric Nitric Hydrochloric Phosphoric | Sulfuric - sulfate Nitric - nitrate Hydrochloric - chloride Phosphoric - phosphate |
| Some common chemical equations for the neutralisation of acids by a base or metal carbonate can be constructed using what? | Some common chemical equations for the neutralisation of acids by a base or metal carbonate can be constructed using: - sulfuric acid, nitric acid, hydrochloric acid - ammonia, potassium hydroxide, sodium hydroxide and copper oxide - sodium carbonate and calcium carbonate. |
| What the word equation for the reaction between hydrochloric acid and copper carbonate? | hydrochloric acid + copper carbonate → copper chloride + water + carbon dioxide |
| Write the balanced symbol equation for the reaction between hydrochloric acid and copper carbonate. | 2HCl + CuCO3 → CuCl2 + H2O + CO2 |
Want to create your own Flashcards for free with GoConqr? Learn more.