Across
- 2. The specific chemicals or substances involved in a chemical reaction.
- 4. Reaction: A chemical reaction that absorbs energy from the surroundings, causing the temperature to drop.
- 5. The starting substances in a chemical reaction.
- 7. An exothermic process of burning a fuel in oxygen to release energy.
- 8. The new substances formed as a result of a chemical reaction.
Down
- 1. Energy: The minimum amount of energy required to start a chemical reaction.
- 3. Reaction: A chemical reaction that releases energy into the surroundings, usually in the form of heat, causing the temperature to rise.
- 6. Everything outside the chemical system, such as the container, the air, or a thermometer.
- 9. Decomposition: An endothermic process where a substance is broken down into simpler substances using heat.