Chemistry- Fundamental ideas 0.0 / 5 ? ChemistryUnit 1GCSEAQA Created by: Splash HeslinCreated on: 21-09-14 13:00 Group 0 Noble Gases, unreactive 1 of 25 Mass Number Top number 2 of 25 Atomic number Bottom number, = to number of protons and electrons 3 of 25 Atom Smallest part of an element. 4 of 25 Element Substance made from only one type of atom. 5 of 25 Compounds. 2 or more elements chemically bonded. 6 of 25 Nuclues Made of protons and neutrons. 7 of 25 Boiling and melting energy Absorbs energy as it takes place. 8 of 25 Freezing and condensing energy Releases energy as it takes place. 9 of 25 Diffusion The random movement of liquid and gas particles. 10 of 25 The smaller the molecule... ... the faster the diffusion. 11 of 25 Elements in the same group have... ... similar properties. 12 of 25 The group number is = to... ... the number of electrons. 13 of 25 Neutrons equation mass number- atomic number. 14 of 25 Protons and electrons = to atomic number 15 of 25 Proton charge +1 16 of 25 Neutrons charge 0 17 of 25 Electrons charge -1 18 of 25 Element like to have a ___ outer shell full 19 of 25 Isotope Atoms of the same element can have different numbers of neutrons. 20 of 25 Isotopes have the same nummber of... ... protons and electrons. 21 of 25 Protons relative mass charge 1 22 of 25 Neutrons relative mass charge 1 23 of 25 Electrons relative mass charge Very small. 24 of 25 ammonia+ hydrogenchloride= = ammoniumchloride 25 of 25
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