simple chemical reactions 0.0 / 5 ? Sciencesimple chemical reactionsYears 7-9 (KS3)None Created by: kdigbyCreated on: 23-04-21 07:44 7952843110 Across 1. What is another name for Calcium hydroxide? (4) 4. When hydrogen combines with oxygen during burning, what is made? (5) 5. What is always created during a chemical reaction?(3,10) (13) 9. In a chemical equation, what does the arrow mean? (7) 10. Which gas are most acids compounds of? (8) Down 2. What does combustion mean? (7) 3. What is hydrogen also known as? (5,4) (9) 4. What is the oxide of hydrogen? (5) 7. In a chemical reaction, what do we call the substances we start with? (9) 8. Which element, found in coal, causes acid rain when it dissolves in water? (6)
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