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SingaporeCombined ScienceQuick questions
Chemistry: Reactions, Acids and Salts
Quick questions on Chemical reactions and energy changes: N(A)-Level Combined Science Chemistry
2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is signs of a chemical reaction?Show answer
A chemical reaction makes new substances. Tell-tale signs include:
What are balancing equations?Show answer
A word equation names the reactants and products, for example:
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