Alkali metals 3.0 / 5 based on 1 rating ? ChemistryChemical patterns and reactivity seriesGCSEAQA Created by: CharCreated on: 15-05-13 17:18 What do they react readily with? Air and water 1 of 14 What are they at room temperature? Soft solids 2 of 14 Melting and boiling points = Low (they decrease going down the group) 3 of 14 Why do lithium, sodium and potassium float on water? Low densities (alkali metals) 4 of 14 What do they react with to produce hydrogen gas and a metal hydroxide (an alkali)? Water 5 of 14 For example, Sodium + water = Sodium hydroxide and hydrogen 6 of 14 They react with halogens to form (Group 7) to form... Salts 7 of 14 What colour are the salts produced? White or colourless 8 of 14 For example, Sodium + chlorine = Sodium chloride 9 of 14 Compounds of alkali metals dissolve in.. Water 10 of 14 Forming solutions that are usually... Colourless 11 of 14 Going down Group 1, the reactivity of the alkali metal... Increases 12 of 14 Why? Outer electron is less strongly attracted the nucleus as the energy levels increases 13 of 14 And? The atoms get larger 14 of 14
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