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7 Cards in this Set
- Front
- Back
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What are bases? |
Metal oxides and hydroxides. Soluble hydroxides alkalis. |
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What are acids? |
Acids react with bases to form salts and water. These reactions are called neutralisation reactions. Acids react with metals to form a salt and hydrogen. Salt crystals can be obtained from the solution if you evaporate the water. |
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What does the salt produced in a reaction between an acid and metal depend on?
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The acid used and the metal in the base or alkali. |
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When metal carbonates react with acids what do they form. |
Salt, water, and carbon dioxides. Calcium carbonate + hydrochloric acid --> calcium chloride + water + carbon dioxide |
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What is limestone used for? |
It can raise the pH of acidic soils or lakes affected by acid rain. |
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What is the test for carbon dioxide? |
It turns limewater solution cloudy. |
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How do you carry out a titration? |
1) Measure a known volume of alkali using a pipette (washed with distilled water) into a conical flask. 2) Add a few drops of acid/base indicator to the solution and swirl. 3) Pour the acid into a burette (washed with distilled water). 4) Record the burette's reading and release small amounts of acid into the flask. Swirl the solutions to make sure they are mixed. 5) Keep repeating until the indicator changes colour. Record the reading and work out the volume of acid in the flask. 6) Repeat it three times and calculate and average. |
