What do all these have in common?

To to Balance the Elements To write a word equation (E) To state the link between reacting masses and predict masses in a reaction. (E) To calculate the mass of a reactant or product in a reaction given the other masses in the reaction (C) To balance a symbol equation (A) 2 mins Equation Mass Reaction Product Balanced Reactant Symbol

Naming Compounds Metal goes first Metal + oxygen = Metal oxide Metal + nitrogen = Metal nitrate Metal + CO2 = Metal carbonate Fluorine, bromine and chlorine  fluoride, bromide or chloride 4 mins

Use the rules to name these compounds Name the compound made from sodium and fluorine. What compound is made from oxygen and zinc? What compound is made in the reaction between bromine and potassium? 3 mins

Reactant + Reactant  Products Word Equations Used to show reactants and products Reactant + Reactant  Products E.g. Magnesium + Oxygen  Magnesium Oxide Write the equations for the compounds you have just named 5 mins

To to Balance the Elements To write a word equation (E) To state the link between reacting masses and predict masses in a reaction. (E) To calculate the mass of a reactant or product in a reaction given the other masses in the reaction (C) To balance a symbol equation (A) 2 mins Equation Mass Reaction Product Balanced Reactant Symbol

Symbol Equations Much faster than word equations E.g. Mg + O2  MgO Write the symbol equations for the word equations you have just completed 5 mins

Balancing Equations The number of atoms on each side of the equation must balance E.g Mg +O2  MgO There must be the same number of Mg and O on each side 2 mins

Balancing Equations Are the equations on the worksheet balanced? Finished level 1? Try level 2!

Rules You can’t change the formulae You can only multiply how many of that compound/molecule there is You should have the same number of each element on each side of the equation 2 mins

Now try balancing these equations H2 + Br2 → HBr Na + Cl2 → NaCl CH4 + O2 → CO2 + H2O P + Cl2 → PCI3 CaCO3 → CO2 + CaO Fe + H2O → H2 + Fe3O4 8 mins

Red = Balanced Green = Unbalanced 7 mins

Starter: are these balanced? Yes or no? 7 mins

Reacting Masses The mass of the reactants will always = the mass of the products 2 mins

Now you try FeCO3 _________> FeO + CO2 Step 1: Make sure the equation is balanced Step 2: If 3.0g of CO2 is produced from 7.8g of FeCO3, how much FeO was made? 3 mins

Objectives Completed  To state the link between reacting masses and predict masses in a reaction. (E) To calculate the mass of a reactant or product in a reaction given the other masses in the reaction (C)

Evaluation Complete your pupil progress sheet for this lesson Complete any keywords Write a target to help you improve