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Chemistry-mid yr-ch4
chemistry formulas and words involving rocks, minerals
| Question | Answer |
|---|---|
| calcium hydoxide+ carbon dioxide | calcium carbonate+ water |
| carbon dioxide + water | Carbonic acid |
| calcium carbonate + strong heat | carbon dioxide+ calcium oxide |
| calcium oxide | quicklime |
| calcium hydroxide | slaked lime |
| calcium hydroxide+ lots of water, stir well and then filter | calcium hydroxide solution |
| calcium hydroxide solution | limewater |
| calcium oxide+ water | calcium hydoxide |
| calcium carbonate -> strong heat | calcium oxide+ carbon dioxide |
| calcium hydroxide solution -> pass in carbon dioxide (limewater test) | calcium carbonate |
| Types of weathering | Physical weathering Chemical weathering |
| Physical weathering | Weathering by temperature changes, by frost action |
| Erosion | involving both weathering of rocks & transportation of weathered rock pieces (by gravity, wind, water) |
| Weathering | slow process in which exposed rocks are broken down into smaller pieces |
| Chemical weathering | attack by acid, oxygen |
| graphite | pencil head |
| cooper pyrite | main ore of copper |
| Haematite | main ore of iron |
| Bauxite | main ore of aluminium |
| rock | solid mass of a mineral mixture of minerals |
| mineral | naturally occurring solid with definite crystalline, chemical composition |
| Quartz | contains silicon dioxide |
| Granite | contains mica, quartz, feldspar |
| calcite | crystalline form of calcium carbonate |
| calcium carbonate+carbonic acid | calcium hydrogencarbonate |