Across
- 2. Number that tells you the amount of a certain atom in a chemical formula.
- 4. Substances that enters a chemical reaction.
- 6. Non-flammable gas that is less dense than air.
- 7. Substance that is produced from a chemical reaction.
- 11. Measurement that tells you how much space matter takes up.
- 13. Another word for when mass stays the same.
- 16. Property that describes how a substance interacts with fire.
- 17. You ... change the subscripts when you balance a chemical equation.
- 18. Property that you get when mass is divided by volume.
Down
- 1. Chemical reaction that releases heat.
- 3. Chemical reaction that absorbs energy from the surroundings.
- 5. Gas that makes up 78% of the air around us.
- 8. A molecule is made up of at least ... atoms.
- 9. Number that tells you the amount of molecules in a chemical formula.
- 10. Unit to measure temperature in Germany.
- 12. Flammable gas made up of one carbon and four hydrogen atoms.
- 14. Flammable gas that you get as a product when you run electricity through water.
- 15. Substance that creates carbon dioxide when reacting with water and citric acid.