LO: Learn how to name compounds in chemical reactions.

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Presentation transcript:

LO: Learn how to name compounds in chemical reactions. Wednesday 18th November Naming Compounds Key Words: Compound Equation LO: Learn how to name compounds in chemical reactions. Learning challenge Interpret word and formula equations to determine the name of the compound. Extended challenge Balance formula equations. LIFELINES: READING: R4 TALKING: T2 WRITING: W5

Naming compounds This happens with the following elements: H2 N2 O2 F2 Rule 1 – If two identical elements combine then the name doesn’t change This happens with the following elements: H2 N2 O2 F2 Cl2 Br2 These elements always go around in diatomic pairs. For example, hydrogen looks like this: 25/12/2018

Rule 2 – When two elements join the end is usually _______ide. Naming compounds Rule 2 – When two elements join the end is usually _______ide. e.g. Magnesium + oxygen magnesium oxide Sodium + chlorine Magnesium + fluorine Lithium + iodine Chlorine + copper Oxygen + iron KBr LiCl CaO MgO2 KF 25/12/2018

e.g. Sodium + hydrogen + oxygen Sodium hydroxide Naming compounds 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 Potassium + hydrogen + oxygen Lithium + hydrogen + oxygen Calcium + hydrogen + oxygen Mg(OH)2 25/12/2018

e.g. Copper + sulphur + oxygen Copper sulphate Naming compounds Rule 4 – When three or more elements combine and one of them is oxygen the ending is _____ate e.g. Copper + sulphur + oxygen Copper sulphate Calcium + carbon + oxygen Potassium + carbon + oxygen Calcium + sulphur + oxygen Magnesium + chlorine + oxygen Calcium + oxygen + nitrogen AgNO3 H2SO4 K2CO3 25/12/2018