Chemistry Revi 0.0 / 5 ? ChemistryAtomsGCSEAll boards Created by: Eris_MemajCreated on: 10-03-20 20:48 What is the first element on the periodic table? Hydrogen 1 of 19 What is the centre of an atom called? Nucleus 2 of 19 What is the main gas found in the air we breathe? Nitrogen 3 of 19 True or false? Acids have a pH level below 7. True 4 of 19 True or false? An electron has a positive charge? False 5 of 19 What is the chemical symbol for gold? Au 6 of 19 K is the chemical symbol for which element? Potassium 7 of 19 What orbits the nucleus of an atom? Electrons 8 of 19 At room temperature, what is the only metal that is in liquid form? Mercury 9 of 19 True or false? A neutron has no net electric charge True 10 of 19 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 19 What is H20 more commonly known as? Water 12 of 19 What is the third most common gas found in the air we breathe? Argon 13 of 19 What is the name given to substances that are initially involved in a chemical reaction? Reactants 14 of 19 True or false? Bases have a pH level below 7? False 15 of 19 Is sodium hydroxide (NaOH) an acid or base? Base 16 of 19 Atoms of the same chemical element that have different atomic mass are known as? Isotopes 17 of 19 True or false? A proton carries a positive charge? True 18 of 19 True or false? A proton carries a positive charge? Carbon 19 of 19
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