Across
- 5. The principle that matter is neither created nor destroyed in a chemical reaction (12,2,4)
- 11. A process in which reactants change into products
- 12. A gas produced during respiration (6,7)
- 13. A compound used as a fuel for respiration in living organisms
- 14. The substances that take part in a chemical reaction and are used up
Down
- 1. A chemical reaction in living cells that releases energy from glucose using oxygen
- 2. Another word for ‘produces,’ indicated by → in a chemical equation
- 3. A reaction in plants that uses light energy to convert carbon dioxide and water into glucose and oxygen
- 4. Describes a chemical equation with the same number of each type of atom on both sides
- 6. The calculation of quantities of reactants and products in a chemical reaction
- 7. The number placed in front of a chemical formula that can be changed to balance an equation
- 8. A compound made of hydrogen and carbon often used as a fuel
- 9. The substances formed as a result of a chemical reaction
- 10. A reaction in which a substance reacts with oxygen usually releasing heat and light