Back to the full dot-point answer
SingaporeCombined ScienceQuick questions
Chemistry: Metals and Organic Chemistry
Quick questions on The reactivity series and displacement explained: O-Level Combined Science
6short 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 the reactivity series?Show answer
Arranging common metals from most to least reactive gives the reactivity series. A useful section, most reactive first, is:
What is reactions with dilute acid?Show answer
Metals above hydrogen react with dilute acid to give a salt and hydrogen; the more reactive the metal, the faster the fizzing. Copper and silver, below hydrogen, do not react with dilute acid. This gives another way to rank metals.
What is reactions with oxygen?Show answer
Reactive metals tarnish or burn readily in air, forming oxides; sodium must be stored under oil to keep oxygen away. Unreactive metals such as gold and silver resist oxidation, which is why they stay shiny. The ease of forming the oxide follows the same order.
What is q1?Show answer
Place calcium, copper and iron in order of reactivity, most reactive first. [2 marks]
What is q2?Show answer
State what you would see if a piece of zinc were placed in copper(II) sulfate solution. [2 marks]
What is q3?Show answer
Explain why copper does not react with dilute hydrochloric acid. [2 marks]
Have a question we have not covered?
This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.