Aimed at a mixed ability year 9 class
Worksheets are from TES
Starter Activity
Answer starter questions
Main –
Go through state symbols, make a note of what each means
Explain the conservation of mass – need to write down the defintions
Stretch: why do some reactions appear to gain/lose mass
Go through steps on how to balance equations. Supporting worksheets to build up. Make sure there is an emphasis on what the ‘big’ and ‘little’ numbers mean. Do examples at each step, then get students to complete the rest
Extension sheet of harder equations to balance for students flying through
Plenary
Plenary – make rules for balancing equations
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