Across
- 4. oxide What product is formed when magnesium reacts with oxygen?
- 6. Burning is a chemical reaction in which a substance combines with ____
- 7. Does the temperature of an endothermic reaction increase or decrease?
- 8. Reaction that has gained oxygen
- 9. A reaction that gives out heat energy
- 14. What product is formed when carbon reacts with oxygen?
- 15. Does the temperature of an exothermic reaction increase or decrease?
Down
- 1. Another word for burning
- 2. A reaction that absorbs heat energy
- 3. What can we see when a reaction has taken place?
- 5. What happens to the atoms of the reactants?
- 10. What product is formed when magnesium reacts with hydrochloric acid other than magnesium chloride?
- 11. What is the chemical energy turned into when coal is burned?
- 12. Is melting ice an endothermic process or reaction?
- 13. What is needed for combustion to occur other than starting energy and oxygen?