Chemical equations

• Chemical Changes are Shown Using Chemical Equations
• One way to show a chemical reaction is to use a chemical equation
• Chemical equations use symbols and you can't tell straight away what the actual substances are
• Symbol Equations

  Show the formulas of the reactants and products
• Symbol equations need to be balanced
• Balancing symbol equations

  1. Find an element that doesn't balance and put a number in front to try and sort it out

  2. See where it gets, it may create another imbalance, so put another number and see where that gets you

  3. Carry on chasing unbalanced elements until it's balanced
• Balancing equations is about practice, it becomes less scary with more practice
• Hydrogen and oxygen molecules are formed in a reaction where water splits apart