Atoms and Matter 2.5 / 5 based on 2 ratings ? ChemistryAtoms and compoundsIGCSEEdexcel Created by: Lottie BurrCreated on: 22-02-13 17:33 Solids Densely packed particles touching each other in a regular arrangement 1 of 30 Liquids Quite tightly packed but the particles can move past each other allowing the substance to flow 2 of 30 Gases Completely randomly arranged and each particle is now separate from every other and very widely spaced out 3 of 30 Melting and boiling.......energy Require (Endothermic) 4 of 30 Freezing and condensing..........energy Release (Exothermic) 5 of 30 Atoms Smallest indivisible building block 6 of 30 Elements Made from only one type of atom 7 of 30 Molecules two or more atoms bonded together 8 of 30 Compound Two or more different atoms bonded together 9 of 30 Mixture Impure substance. Elements or compounds in no fixed ratio not chemically combined 10 of 30 Distillation Used to separate a liquid from a mixture by heating 11 of 30 Fractional Distillation Used to separate two or more liquids from each other, due to a difference in their boiling point 12 of 30 Filtration Used to separate an insoluble solid from a liquid 13 of 30 Crystallisation Used to separate a soluble compound from its saturated solution 14 of 30 Chromatography Separates a mixture in solution into its component parts, based on solubility 15 of 30 Atoms have a heavy.....? Nucleus 16 of 30 Nucleus contains? Protons(+1) and Neutrons(0) 17 of 30 Relative mass of protons and neutrons? 1 18 of 30 Atomic Number = ? Number of protons 19 of 30 Mass Number = ? Number of protons + number of neutrons 20 of 30 Charge of an atom? No charge 21 of 30 What are Isotopes? Atoms of an element with the same number or protons and elections but a different number of neutrons 22 of 30 Isotopes have the same? Atomic Number 23 of 30 Isotopes have different? Mass Number 24 of 30 What is Relative Atomic Mass? The average mass of all the isotopes of a given element 25 of 30 How many electrons does the 1st shell hold? 2 26 of 30 How many electrons does the 2nd shell hold? 8 27 of 30 How many electrons does the 3rd shell hold? 8 28 of 30 Elements with a full outer shell are.....? Very stable 29 of 30 Elements in the same group have...? The same number of electrons in their outer shell 30 of 30
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