Science - Chemistry 0.0 / 5 ? ScienceChemistryGCSEEdexcel Created by: AnnaCreated on: 04-05-13 12:00 Rock formed as a result of high temperature and pressure applied on others rock is called? Metamorphic rock 1 of 16 What type of rock is limestone Sedimentary 2 of 16 What is mainly release by volacaones? Carbon dioxide 3 of 16 Why did the amount of water vapour decrease? It was condensed to liquid water and formed oceans. 4 of 16 Which gas has the biggest amount in today's atmosphere Nitrogen 5 of 16 Natural cause of changes in atmosphere is: Volcanic 6 of 16 What is a advantage of quarrying limestone? Help local families and businesses, because caused more jobs in local ares. 7 of 16 What is name of reaction in which substances are broken down using heat energy? thermal decomposition 8 of 16 What is formula for calcium carbonate? CaCO3 9 of 16 What is the range of pH? 0-14 10 of 16 What is the pH of substances when it is neutral? 7 11 of 16 Which colour show litmus paper when is in acid substance? Red 12 of 16 Acid + base -> salt + water is the general equation for: Neutralising 13 of 16 Which gas tested caused that the squeaky pop will be appear? Hydrogen 14 of 16 Elements presented in the calcium carbonate are: calcium, carbon and oxygen only 15 of 16 What is the reasons of producing the hydrochloric acid in the stomach? Kill bacteria. 16 of 16
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