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www.chemactive.com GCSE CHEMISTRY RATES OF REACTIONS High Demand Questions QUESTIONSHEET 3 Carbonates react with acids to produce a salt, carbon dioxide and water. (a) The equation describes the reaction between calcium carbonate and hydrochloric acid.
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chemactive.comwww.chemactive.com GCSE CHEMISTRY ATOMIC STRUCTURE & BONDING High Demand Questions QUESTIONSHEET 1 (a) Oxygen and sulphur are …
GCSE PHYSICS WAVES & SOUNDS - Chemactive.com
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chemactive.comwww.chemactive.com GCSE CHEMISTRY METALS & THE REACTIVITY SERIES ANSWERS AND MARK SCHEMES QUESTIONSHEET 10 (a) one per connection 3 (b) (i) potassium 1 (ii) magnesium/ iron 1
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