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James - A universal indicator is a pH indicator composed of a solution of several compounds that exhibits several smooth colour changes over a pH value range from 0 to 14 to indicate the acidity or alkalinity of solutions, where 7 indicates neutral. Although there are several commercially available universal pH indicators, most are a variation of a formula patented by Yamada in 1933. Details of this patent can be found in Chemical Abstracts. Experiments with Yamada's universal indicator are also described in the Journal of Chemical Education.

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Ollie V - metals + water = metal hydroxide + water

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Ferdy
I checked everyone’s work

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Rosie

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Ollie V - Acid + alkali = salt + water

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Rosie
Order of reactivity -
Potassium
Sodium
Calcium
Magnesium
Aluminium
Zinc
Iron
Tin
Lead
Copper
Silver
Gold

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Matt - Potassium is the he most reactivemetal  in the reactivity series with Gold being the least

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James

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Matt - Iron + hydrochloric acid= Iron chloride

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James

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Rosie
Test for Oxygen is Relighting a glowing splint

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Matt - When a metal carbonate reacts with acids it forms carbon dioxide, salt and water

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Rosie
Test for Carbon dioxide is Milky Limewater

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Rosie
Test for Hydrogen is Squeaky Pop

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Fleur

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Rosie

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Matt - A neutralisation reaction is when an acid and a base react to form water and a salt and involves the combination of H+ ions and OH- ions to generate water. The neutralisation of a strong acid and strong base has a pH equal to 7.

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James - PH scale
1,2,3  strong acid 4,5,6 weak acid 7,8 neutral 9,10,11 weak alkali 12,13,14strong alkali

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Alex Rathore.
Displacement Reactions
This is a chemical reaction in which a more reactive element from its compound. Both metals and non-metals take part in displacement reactions. Example: Reaction of iron nails with copper sulphate solution.

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Metals and water word and symbol equation:
Metal + acid =>salt + hydrogen
Acid + alkali => salt + water
Metal oxide + acid => salt + water ( base +acid)
(metal hydroxide)
Word equation:
Metal+ acid: Magnesium+hydrochloride acid => magnesium chloride + hydrogen.
Acid+alkali: Nitric acid + sodium hydroxide => sodium nitrate + water
Base+acid:Copper oxide + sulphuric acid => copper sulphate + water

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Ollie V - metals + acids = salt + hydrogen