GCSE AQA Chemistry 3 Quick Quiz

Until recently, the elements were arranged in order of their [blank_start]atomic mass[blank_end].

What were the problems with Newlands' Law of Octaves?

Group 1 metals become [blank_start]more[blank_end] reactive as you go down the group because the outer electron is more easily lost as it's further from the nucleus.

Label the halogen with the dot.

Transition metals are less reactive, denser, stronger and harder than Group 1 metals

Permanent hardness is caused by [blank_start]calcium sulphate[blank_end].

Which of these is the order water is treated in?

Equilibrium means the amounts of reactants and products reach a certain balance and stay there.

If you raise the pressure, it will encourage the reaction which produces [blank_start]less[blank_end] volume.

What conditions are needed for the Haber Process?

Alcohols have the functional [blank_start]-OH[blank_end] group.

The first 3 alcohols...

Carboxylic acids don't ionise completely (release H+ ions) and so form [blank_start]weak acidic[blank_end] solutions.

How do you work out concentration?

In an exothermic reaction, the energy released in bond formation is [blank_start]greater[blank_end] than the energy used in breaking old bonds.

What are the problems with using hydrogen fuel cells?

Aluminium hydroxide is a white precipitate at first but redissolves in excess NaOH to form a [blank_start]colourless[blank_end] solution.

To test for halide ions, add dilute nitric acid followed by [blank_start]silver nitrate solution[blank_end].

To test for a sulphate ion, add dilute HCl followed by [blank_start]barium chloride solution[blank_end].

A more reactive halogen can displace a less reactive halogen from an aqueous solution of its salt.