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Presentation transcript:

mmcl

mmcl Write the formula for silver (I) chloride AgCl answer 1

mmcl What is the valency of iron in iron ( III ) oxide? 3 answer 2

mmcl How is the valency of a transition metal shown in the names of its compounds? Roman Numerals in brackets eg copper (II) chloride = valency 2 answer 3

mmcl What is the chemical formula of hydrogen sulphide? answer H2SH2S 4

mmcl answer CaO What is the chemical formula of calcium oxide? 5

mmcl What is the valency of the Group 7 elements? answer 1 6

mmcl answer What is the valency of the Group 2 elements? 2 7

mmcl H2H2 answer What is the chemical formula of hydrogen? 8

mmcl CCl 4 answer What is the chemical formula of carbon tetrachloride? 9

mmcl What is meant by the prefix:- Mono? Mono = 1 ie carbon monoxide molecules contain one oxygen atom (CO) answer 10

mmcl What is meant by the prefix:- Di? Di = 2 ie carbon dioxide molecules contain two oxygen atoms (CO 2 ) answer 11

mmcl What is meant by the prefix:- Tri? Tri = 3 ie sulphur trioxide molecules contain three oxygen atoms (SO 3 ) answer 12

mmcl What is meant by the prefix:- Tetra? Tetra = 4 ie carbon tetrachloride molecules contain four chlorine atoms (CCl 4 ) answer 13

mmcl How many atoms of each element are present in a molecule of H 2 O? H = 2 O = 1 answer 14

mmcl answer How many atoms of each element are present in a molecule of C 6 H 12 O 6 ? C = 6 H = 12 O = 6 15

mmcl Which elements have the most stable electron arrangement? The Noble Gases answer 16

mmcl Name the compound with the formula N 2 O 4 Dinitrogen tetroxide (tetraoxide) answer 17

mmcl What type of elements do not normally form bonds with other elements? The Noble Gases answer 18

mmcl What type of elements bond together to form covalent bonds? Non Metals answer 19

mmcl What is a molecule? A group of atoms joined together by covalent bonds answer 20

mmcl Draw a diagram to show the SHAPE of a methane molecule (CH 4 ) answer H H H H C 21 tetrahedral

mmcl What is the formula for silver (I) dichromate? (You will need to use the Data Book) answer 22 Ag 2 Cr 2 O 7

mmcl An ionic compound has the formula X 2 O.In what Group of the Periodic Table could the element X be found? answer 23 Group 1 because it’s valency is 1

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