metals 4.5 / 5 based on 2 ratings ? ChemistryAcids, bases and saltsGCSENone Created by: scarlettwoodCreated on: 05-02-17 13:46 Which gas is given off when metals react? Hydrogen 1 of 19 What electrical charge does the nucleus of an atom have? A positive electrical charge 2 of 19 What is the test for carbon dioxide? If lime water turns into a white precipitate 3 of 19 What property do all metals in group a of the periodic table have? They all react with water 4 of 19 How can you tell which atoms have more electrons? It depends on it's position in the periodic table 5 of 19 metal oxide + acid= a salt + water 6 of 19 metal hydroxide + water= a salt + water 7 of 19 acid + metal carbonate= a salt + water + carbon dioxide 8 of 19 acid + metal hydrogen carbonate= a salt + water + carbon dioxide 9 of 19 Which metal corrodes steadily in acids if you don't paint it and goes rusty? iron 10 of 19 Which metal can be left unpainted because it protects itself? aluminium 11 of 19 Which metal can be used to protect steel and iron by galvanising? zinc 12 of 19 Which metal reacts quickly with acids but very slowly with water? magnesium 13 of 19 What is galvanising? Coating iron or steel with a protective layer of zinc 14 of 19 metal + oxygen = metal oxide 15 of 19 What is the most reactive metal in the reactivity series? potassium 16 of 19 Why do displacement reactions occur? Because of the difference in the reactivity of metals 17 of 19 What does adding a more reactive metal to a salt containing a less reactive metal do? It means the less reactive metal is replaced 18 of 19 The more reactive the atom... the higher the atomic radius 19 of 19
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