C12-Chemical Analysis

A glass tube used to measure accurate volumes of liquids

A measurement from chromatography: it is the distance a spot of substance has been carried above the baseline divided by the solvent front

Bubble through limewater, limewater turns cloudy white if Carbon Dioxide is present Lime water is calcium hydroxide

Hold a lit splint near the gas being tested, a “pop” noise will be made if hydrogen is present

Chlorine gas will bleach damp litmus paper. Make it colourless

A glowing splint will relight if exposed to oxygen

Hold metal in a roaring Bunsen flame, the flame will turn Crimson Red if lithium is present

Hold in a roaring Bunsen flame, the flame will turn Yellow-orange if Sodium is present

Hold in a roaring Bunsen flame, the flame will turn Lilac if Potassium is present

Hold in a roaring Bunsen flame, the flame will turn green if copper is present Add to a solution of sodium hydroxide, a blue precipitate will form if copper is present

Hold in a roaring Bunsen flame, the flame will turn orange-red if Calcium is present Add to a solution of sodium hydroxide, a white precipitate that does not dissolve when more NaOH is added will form if calcium is present

Add to a solution of sodium hydroxide, a white precipitate that does not dissolve when more NaOH is added will form if magnesium is present

Add to a solution of sodium hydroxide, a white precipitate that dissolves when more NaOH is added will form if Aluminium is present

Add to a solution of sodium hydroxide, a green precipitate will form if Iron (II) is present

Add to a solution of sodium hydroxide, a brown precipitate will form if Iron (III) is present

Add to a dilute acid, bubbles of gas that turn limewater cloudy will form if Carbonate ions are present Add to a solution of barium chloride with hydrochloric acid, bubbles of gas will form when acid is added if Carbonate ions are present Add to a solution of silver nitrate with nitric acid, bubbles of gas will form when acid is added if Carbonate ions are present

Add to a solution of Silver Nitrate with Nitric acid, a white precipitate will form if chloride ions are present

Add to a solution of Silver Nitrate with Nitric acid, a cream precipitate will form if Bromide ions are present

Add to a solution of Silver Nitrate with Nitric acid, a yellow precipitate will form if Iodide ions are present

Place a damp splint into some of the ionic compound as a solid. Place the splint in the roaring Bunsen flame and look for any colour

Dissolve a small amount of the solid ionic compound in deionised water (about 3cm depth). Then add sodium hydroxide solution. If a white precipitate forms, test it further by adding more sodium hydroxide solution.

Dissolve a small amount of solid ionic compound in deionised water (about 3cm depth). Then add a few drops of nitric acid followed by 1cm depth of silver nitrate solution

Dissolve a small amount of the solid ionic compound in deionised water (about 3cm depth). Then add a few drops of hydrochloric acid followed by 1cm depth of barium chloride solution

Place some hydrochloric acid in a test tube and add a small spatula load of the solid ionic compound. Look for bubbles of gas. If a gas is released then insert a delivery tube into the test tube and bubble the gas through limewater