chemistry

• Chemical reactions can be explained through chemical equations

• Understanding and identifying products and reactants in reactions

• Conduct a chemical reaction and explain the process using chemical equations.

• Understand and explain how energy is involved in chemical reactions

1. Write out the chemical equation

2. Make a list of the number of atoms for each element in reactants and products

3. ​Times the numbers of the same elements until you find a matching number

4. That number is called the coefficient and is written at the front of the molecule

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​How to balance equations

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​Activity

We will now use the cut-out squares on your desk to balance the equations.

Use a blank piece of paper to list the elements and how many are on both sides of the equations.

Then place the relevant coefficient in front of the molecule. so the equation is balanced.

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