Sample exam questions - chemical changes - AQASentence completion questions
Understanding how to approach exam questions helps to boost exam performance. Question types will include multiple choice, structured, mathematical and practical questions.
Foundation tier papers may include questions in which you have to complete a sentence. Some of these questions include words to choose from in a box. You do not have to use all the words - some of them will be wrong.
These questions have been written by Bitesize consultants as suggestions to the types of questions that may appear in an exam paper.
Sample question 1 - Foundation
Question
Use words from the list to complete the sentences.
[2 marks]
A salt
Acidic
Neutral
Alkaline
If a solution has a pH of 8, it is ______________. Some vinegar has a pH of 4, so the vinegar is ________.
If a solution has a pH of 8, it is alkaline. Some vinegar has a pH of 4, so the vinegar is acidic.
Sample question 2 - Foundation
Question
Use words and numbers from the list to complete the sentences.
[3 marks]
Lead
Anode
Cathode
Bromine
In electrolysis, the positive electrode is called the _______ and the negative electrode is called the _______. In the electrolysis of molten lead bromide, the substance produced at the cathode is _______.
In electrolysis, the positive electrode is called the anode and the negative electrode is called the cathode. In the electrolysis of molten lead bromide, the substance produced at the cathode is lead.
