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Natural Science Exam 2024 Questions and Answers

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Natural Science Exam 2024 Questions and Answers

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Natural Science Exam 2024- Grade 9




What happens if you burn a piece of wood with oxygen ? - Answer -- it combines with oxygen

- changes colour

- carbon dioxide and water vapor is released

- gases floats into the air



What is combustion? - Answer -the process of burning something



Compound - Answer -A substance made up of two or more different elements joined by chemical bonds



How to neutralize something ? - Answer -Use a weak acid to neutralize bases



properties of bases - Answer -taste bitter

slippery to the touch

can be poisonous & corrosive

release OH- ions in water



properties of acids - Answer -- sour taste

- turn blue litmus paper red, keep red litmus paper red

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