Y8 Science Chemical Energy 🧪🥼

• Chemical reactions are represented by chemical equations
• The reactants are the starting substances in a chemical reaction
• Reactants


  The starting substances in a chemical reaction
• The products are the new substances formed in a chemical reaction
• Products


  The new substances formed in a chemical reaction
• What is a Chemical Reaction?

  A chemical reaction is a process where atoms or groups of atoms are rearranged to form one or more different substances.
• Examples of Chemical Reactions

  - Burning wood or gasoline - Cooking food - Sweating - Digesting food
• Substances Involved in Chemical Reactions

  - Reactants (the substances that react) - Products (the substances that are formed) - catalysts (substances that speed up the reaction, but don't react themselves)
• Types of Chemical Reactions

  - Combustion (burning or oxidizing) - Synthesis (combining two or more substances) - Decomposition (breaking down one substance into simpler substances)
• Chemical reactions can be represented by equations that show what happens during the reaction.