chemistry 3.0 / 5 based on 1 rating ? ChemistryOrganic and Green ChemistryGCSENone Created by: Tashaxxxx12345Created on: 09-08-15 15:23 What is the first element on the periodic table? Hydrogen 1 of 11 What is the centre of an atom called? A nucleus 2 of 11 True or false? Acids have a pH level below 7 True 3 of 11 What is the main gas found in the air we breathe? Nitrogen (around 78%) 4 of 11 True or false? An electron carries a positive charge False 5 of 11 What is the chemical symbol for gold Au 6 of 11 K is the chemical symbol for which element? Potassium 7 of 11 What orbits the nucleus of an atom? Electrons 8 of 11 At room temperature, what is the only metal that is in liquid form? Mercury 9 of 11 True or false? A neutron has no net electric charge True 10 of 11 A nuclear reaction where the nucleus of an atom splits into smaller parts is known as nuclear fission or nuclear fusion? Nuclear fission 11 of 11
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