GCSE Chemistry Paper 2 (2)

Which of the metal hydroxides can be dissolved in excess NaOH?

• Aluminium hydroxide (Al³⁺⁾

• Magnesium hydroxide (Mg²⁺⁾

• Calcium hydroxide (Ca²⁺⁾

• Potassium hydroxide (KOH)

What colour solution does Aluminium hydroxide produce after dissolving in NaOH?

• White

• Lilac

• Colourless

• Yellow

Where are the spots of the samples placed in chromatography?

• Randomly on the piece of paper

• In a vertical line on the paper

• In a horizontal line on the paper

Which instrumental method is used to work out the identity and concentration of the metal ions present in a solution?

• Flame Emission Spectroscopy

• Chromatography

• Crystalisation

• Titration

What is the output of spectroscopes?

• Triangle spectra

• Square spectra

• Line spectra

• Dashed line spectra

What can flame emission spectroscopy determine about a solution?

• The concentration of the metal ions present

• The metal hydroxides present

• The metal ions present

• The concentration of the metal mixtures present

Is the following statement true or false?

"Impurities lower the boiling point and decrease the range of temperatures at which the sample will boil."

• False

• True

Which of the following is not an example of a formulation?

• Hand sanitiser

• Fertilisers

• Cleaning agent

• Distilled water

Which of the following forms a green precipitate when NaOH is added to it?

• Copper(II)

• Iron(II)

• Iron(III)

What must be added to the solution before silver nitrate when testing for halides?

• Dilute Nitric Acid

• Silver Nitrate

• Barium Chloride

• Sodum Chloride