Sample exam questions - chemical changes - AQALink box and sentence completion questions
Understanding how to approach exam questions helps to boost exam performance. Question types will include multiple choice, structured, mathematical and practical questions.
Link box questions and sentence completion questions
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.
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
The electrolysis of copper sulfate solution makes two products, one at each electrode.
Draw one line from each electrode to the product produced there. [2 marks]
Sample question 2 - 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 [1]. Some vinegar has a pH of 4, so the vinegar is acidic [1].
Sample question 3 - 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 [1] and the negative electrode is called the cathode [1]. In the electrolysis of molten lead bromide, the substance produced at the cathode is lead [1].