Chemistry quiz definitions :) 3.5 / 5 based on 6 ratings ? ChemistryGCSEAll boards Created by: AyeshaCreated on: 24-05-11 17:51 What is an atom Smallest particle of an element 1 of 13 What is a molecule? 2 or more atoms chemically bonded together 2 of 13 What is an element? A substance that contains all the same atoms 3 of 13 What is a compound? 2 or more atoms chemically bonded together 4 of 13 What is a mixture? 2 or more compounds / elements mixed together 5 of 13 What is the mass of a proton? 1 6 of 13 What is the mass of an electron 0 (or neglible) 7 of 13 The mass number is.... the number of protons and neutrons 8 of 13 Acid + metal --> salt + hydrogen 9 of 13 Acid + base --> salt + water 10 of 13 Acid + alkali --> salt + water 11 of 13 What are concordant results? 2 results within 0.10 cm3 12 of 13 What percentage of air is oxygen? 21% 13 of 13
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