Chemistry-mid yr-ch4 Word Scramble
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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 |
Created by:
juliako1997
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