A student wants to make pure, dry crystals of copper sulfate from copper oxide (an insoluble black powder) and dilute sulfuric acid.
Plan a method the student could use.
In your answer, explain the reason for each step.
[6 marks]AQA GCSE Chemistry June 2023 Paper 1F
5 questions on this paper's topics
27:001 of 5
Some substances are listed below.
Copper, carbon dioxide, air, sodium chloride.
.1
Which substance is an element?
[1 mark].2
Which substance is a mixture?
[1 mark].3
Give the number of different elements in the formula .
[1 mark].4
A student has a mixture of sand and water. Choose the best method to get the sand.
[1 mark]A student wants to investigate how the volume of sodium hydroxide solution added to 25 cm³ of dilute hydrochloric acid affects the temperature change.
Plan an investigation the student could carry out.
Include the variables to control and how to make the results as accurate as possible.
[6 marks]Silicon dioxide (silica) melts at 1710 °C. Poly(ethene) softens at about 120 °C. Methane boils at −162 °C.
Explain the differences in these temperatures.
Refer to the structure and bonding of each substance.
[6 marks]Some metals are added to solutions of metal sulfates.
.1
Which two mixtures react? Tick two boxes.
[2 marks].2
Explain, in terms of ions, why magnesium is more reactive than zinc.
[2 marks]