One-mark questions and link box questions

One-mark questions often ask you to state, predict, or give a simple reason to explain something. You do not have to answer in a full sentence, but it is usually a good idea to do so, in case that helps to give your answer more depth which might help you to score the mark. Make sure that you include key words in your answer, as these are often required by the mark scheme.

Foundation tier papers may include questions in which you have to draw lines to match correct options. These questions will include incorrect choices.

When you answer a link box question, draw the number of lines needed to answer the question.

Sample question 1 - Foundation

Question

Name the type of reaction shown by the ⇌ sign. [1 mark]

This question is AQA material which is reproduced by permission of AQA.

Reversible reaction. [1]

Sample question 2 - Foundation

Question

The word equation below shows the reaction between anhydrous cobalt chloride and water.

anhydrous cobalt chloride (blue) + water ⇌ hydrated cobalt chloride (pink)

When the student added water to anhydrous cobalt chloride, what happened? [1 mark]

This question is AQA material which is reproduced by permission of AQA.

The colour changed from blue to pink. [1]

Sample question 3 - Higher

Question

Rates of reaction can be investigated by measuring the volume of gas produced every ten seconds during a reaction. Suggest a possible unit for the rate of reaction in this kind of reaction. [1 mark]

This question has been written by a Bitesize consultant as a suggestion to the type of question that may appear in an exam paper.

cm3/s or cm3/min [1]

Sample question 4 - Higher

Question

Which method of speeding up a chemical reaction causes a reduction in the activation energy? [1 mark]

This question has been written by a Bitesize consultant as a suggestion to the type of question that may appear in an exam paper.

Catalyst. [1]