6 marksFoundation and HigherRequired practical 105.5.1.1 Energy transfer during exothermic and endothermic reactions
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]6 marksFoundation and HigherRequired practical 095.4.3.4 Electrolysis of aqueous solutions
A student investigates what is produced when aqueous solutions of copper chloride and sodium chloride are electrolysed using inert electrodes.
Plan an investigation to find the products at each electrode for both solutions.
Include how you would identify any gases.
[6 marks]6 marksFoundation and Higher5.1.2.5 Group 15.1.2.6 Group 7
Group 1 and group 7 elements both show trends in reactivity.
Reactivity increases down group 1 but decreases down group 7.
Explain these two trends in terms of electrons.
[6 marks]4 marksFoundation and Higher5.2.1.3 Ionic compounds5.2.1.2 Ionic bonding
Aluminium oxide is an ionic compound. It contains
Al3+ and
O2− ions.
.1Write the formula of aluminium oxide.
[1 mark] .2Describe the structure of aluminium oxide.
[3 marks] 4 marksFoundation and Higher5.4.1.2 The reactivity series
Some metals are added to solutions of metal sulfates.
.1Which two mixtures react? Tick two boxes.
[2 marks] .2Explain, in terms of ions, why magnesium is more reactive than zinc.
[2 marks] 