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SingaporeCombined ScienceQuick questions
Chemistry: Reactions, Acids and Salts
Quick questions on Reactions of acids and neutralisation explained: O-Level Combined Science
8short 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 acid plus metal?Show answer
A reactive metal reacts with a dilute acid to give a salt and hydrogen gas:
What is acid plus base?Show answer
An acid reacts with a base (a metal oxide or hydroxide) to give a salt and water only:
What is acid plus carbonate?Show answer
An acid reacts with a metal carbonate to give a salt, water and carbon dioxide:
What is naming the salt?Show answer
The salt's name comes from the metal and the acid:
What are neutralisation in terms of ions?Show answer
The essence of every acid-base neutralisation is the same single reaction:
What is q1?Show answer
Write a word equation for the reaction between hydrochloric acid and magnesium oxide. [2 marks]
What is q2?Show answer
Name the gas made when an acid reacts with a carbonate and describe the test for it. [2 marks]
What is q3?Show answer
Write the ionic equation for neutralisation and explain what the spectator ions do. [2 marks]