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Naming Compounds, cations and anions. Elements and symbols that you should know: Part 1 – The obvious ones: 1)Hydrogen 2)Helium 3)Lithium 4)Beryllium.

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Presentation on theme: "Naming Compounds, cations and anions. Elements and symbols that you should know: Part 1 – The obvious ones: 1)Hydrogen 2)Helium 3)Lithium 4)Beryllium."— Presentation transcript:

1 Naming Compounds, cations and anions

2 Elements and symbols that you should know: Part 1 – The obvious ones: 1)Hydrogen 2)Helium 3)Lithium 4)Beryllium 5)Boron 6)Carbon 7)Nitrogen 8)Oxygen 9)Fluorine 10)Neon 11)Magnesium 12)Aluminium 13)Silicon 14)Phosphorus H He Li Be B C N O F Ne Mg Al Si P

3 Some more obvious ones: 15)Sulphur 16)Chlorine 17)Argon 18) Calcium 19) Zinc The less obvious ones: 1)Sodium 2)Potassium 3)Iron 4)Copper 5)Silver 6) Tin 7) Gold 8) Mercury 9) Lead S Cl Ar Ca Zn Na K Fe Cu Ag Sn Au Hg Pb

4 Polyatomic ions (-1 charge) H2PO4DiHydrogen phosphate C2H3O2Acetate HSO3Hydrogen Sulfite HCO3Hydrogen Carbonate NO2Nitrite NO3Nitrate CNCyanide OHHydroxide MnO4Permanganate ClOHypochlorite ClO2Chlorite ClO3Chlorate ClO4Perchlorate

5 Polyatomic ions (-2 charge) HPO4Hydrogen Phosphate C2O4Oxalate SO3Sulfite SO4Sulfate CO3Carbonate CrO4Chromate Cr2O7Dichromate SiO3Silicate

6 Polyatomic ions (-3 charge) PO3Phosphite PO4Phosphate

7 Rule 1– If two identical elements combine then the name doesn’t change This happens with the following elements: 1)H 2 2)N 2 3)O 2 4)F 2 5)Cl 2 6)Br 2 These elements always go around in pairs (diatomic molecules). For example, hydrogen looks like this:

8 Rule 2 – When two elements join and one is a halogen, oxygen or sulphur the name ends with ____ide e.g. Magnesium + oxygen magnesium oxide 1)Sodium + chlorine 2)Magnesium + fluorine 3)Lithium + iodine 4)Chlorine + copper 5)Oxygen + iron 6)KBr 7)LiCl 8)CaO 9)MgS 10)KF

9 Rule 3 – When three or more elements combine and two of them are hydrogen and oxygen the name ends with hydroxide e.g. Sodium + hydrogen + oxygen Sodium hydroxide 1)Potassium + hydrogen + oxygen 2)Lithium + hydrogen + oxygen 3)Calcium + hydrogen + oxygen 4)Mg(OH) 2

10 Rule 4 – When three or more elements combine and one of them is oxygen the ending is _____ate e.g. Copper + sulphur + oxygenCopper sulphate 1)Calcium + carbon + oxygen 2)Potassium + carbon + oxygen 3)Calcium + sulphur + oxygen 4)Magnesium + chlorine + oxygen 5)Calcium + oxygen + nitrogen 6)AgNO 3 7)H 2 SO 4 8)K 2 CO 3

11 Covalent formulaeIonic formulae H 2 O CO 2 NH 3 H 2 O 2 N 2 SO 2 Water Carbon dioxide Ammonia Hydrogen Oxygen Nitrogen Sulphur dioxide NaCl CaCl 2 MgO HCl H 2 SO 4 HNO 3 NaOH Ca(OH) 2 CaCO 3 Al 2 O 3 Fe 2 O 3 Sodium chloride Calcium chloride Magnesium oxide Hydrochloric acid Sulphuric acid Nitric acid Sodium hydroxide Calcium hydroxide Calcium carbonate Aluminium oxide Iron oxide

12 This powerpoint was kindly donated to is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.


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