| Why do some rocks have bigger crystals that others? |
| How does an object gain gravitational potential energy? |
| Combustion reactions are exothermic reactions. What does this mean? |
| Describe what is meant by the 'law of conservation of energy'. |
| How do we test for the presence of water? |
| Describe the process of photosynthesis. Use a word equation to help. |
| What are enzymes and how are they involved in the digestion of food? |
| List the three different types of blood vessel. Which type of blood vessel carries blood away from the heart and which type of blood vessel takes blood to the heart? |
