Starter Potassium and oxygen Sodium and chlorine Magnesium and oxygen

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Presentation transcript:

Starter Potassium and oxygen Sodium and chlorine Magnesium and oxygen Name the compounds containing these elements: Potassium and oxygen Sodium and chlorine Magnesium and oxygen Copper and fluorine Potassium, oxygen and hydrogen Potassium oxide Sodium chloride Magnesium oxide Copper fluoride Potassium oxide Potassium hydroxide Sodium chloride Magnesium oxide No reaction Potassium hydroxide

Magnesium and oxygen No atoms are created or destroyed in a chemical reaction. There should be the same number of atoms of each type of element each side of the equation. Magnesium + Oxygen Magnesium oxide Allow students to burn magnesium ribbon in air, then demonstrate Mg in a gas jar of oxygen.

Other reactions Sodium + Hydrogen 1. Sodium + Water  hydroxide 2. Carbon + oxygen  3. Hydrochloric + Sodium  acid carbonate 4. Calcium  carbonate Sodium + Hydrogen hydroxide Carbon dioxide Sodium + Carbon + Water chloride dioxide These reactions could be completed as a circus with students writing the completed word equation and the noting their observations. Iron + oxygen  iron oxide Sodium hydroxide + hydrochloric acid  water + sodium chloride Calcium + water  calcium hydroxide + hydrogen Zinc + hydrochloric acid  zinc chloride + hydrogen Potassium hydroxide + sulfuric acid  potassium sulfate + hydrogen As an extension pupils could be asked to classify the reactions. Carbon + Calcium dioxide oxide

Use space filler diagrams to represent atoms in a reaction

What happens during a chemical reaction? Hydrogen + Iodine  Hydrogen iodide + Bonds are broken between reactant Bonds are formed to create products

Element Key Hydrogen (H) Carbon (C) Sulphur (S) Oxygen (O) Nitrogen (N) Chlorine (Cl) Nitrogen (N2) Hydrochloric acid (HCl)

Element Key Hydrogen (H) Carbon (C) Sulphur (S) Oxygen (O) Nitrogen (N) Chlorine (Cl) Water (H2O) Hydrogen (H2) Ammonia (NH3)

Element Key Hydrogen (H) Carbon (C) Sulphur (S) Oxygen (O) Nitrogen (N) Chlorine (Cl) Methane (CH4) Carbon tetrachloride Sulphur dioxide (CCl4) (SO2)

Space filler equations! An example H2 + Cl2  2HCl + 

Space filler equations! C + O2  CO2 2 H2 + O2  2H2O CH4 + 2O2  CO2 + 2H2O +   +  + +