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AS LEVEL CHEMISTRY A 2020
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Tuesday 06 October 2020 – Afternoon 191774/5 As Level chemistry A H032/01 Breadth in chemistry Time allowed: 1 hour 30 minutes 1. which substance contains polar molecules? A. C2H4 B.... CO2 C. NCI3 D. SF6 2. What is the formula of silver carbonate A. AgCO3 B. Ag(C03)2 C. Ag2CO3 D. Ag3C03 Your answer_ 3. Which statement explains why ice is less dense than water? A. Hydrogen b0nds are stronger in ice than in water B. Hydrogen bonds hold H2O molecules apart from ice C. Ice is a solid but water is a liquid D. Ice contains hydrogen bonds, but water does not contain hydrogen bonds your answer_ 4. S0me group 2 compounds can be used to neutralise acid soils and to treat acid indigestion [Show More]
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