topic 3 0.0 / 5 ? Chemistryacids and basesGCSEEdexcel Created by: bertie321Created on: 03-01-22 13:05 what is the ph scale it is a measure of how acidic or alkaline a solution is 1 of 15 how do yo measure the pH you use an indicator and it changes the solutions colour to show the pH 2 of 15 what are the 3 indicators litmus, methyl orange and phenolphthalein 3 of 15 what do acids and bases do they neutralise each other 4 of 15 what do acids produce hydrogen ions 5 of 15 what does an acid and metal form they form salts 6 of 15 acid + metal= salt + hydrogen 7 of 15 acid+ metal carbonate= salt + water + carbon dioxide 8 of 15 how do you make soluble salts use an acid and a insoluble base 9 of 15 oxidation meaning loss of electrons 10 of 15 reduction gain in electrons 11 of 15 what is a half equation shows how electrons are transferred during reactions 12 of 15 what is a anode a positively charged electrode receives metals (h+) 13 of 15 what is a cathode a negatively charged electrode receives halide ions (OH-) 14 of 15 what happens when you do electrolysis of molten ionic compounds it forms elements 15 of 15
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