Across
- 1. dioxide:You breath in oxygen and breath out.....
- 2. is a substance that is made up of two or more simpler substances?
- 5. chemical compound is a chemical combination of two or more chemical elements?
- 7. reaction is a reaction where the substances reacting?
- 8. triangle:What is the chemical triangle that consists of oxygen, heat,fuel
- 11. is the smallest amount of a chemical substance?
- 12. chemical element is derived from the scientist luigi galvani?
- 15. is the basic unit that makes up all matter?
Down
- 1. is the reaction where the reactant burns in oxygen, producing a limited number of products?
- 3. is it called when something goes old and brown?
- 4. is the word that describes a reaction in which the system asorbs energy?
- 6. is the chemical element with symbol O called?
- 9. gas:What chemical element is abbreviated to GHG?
- 10. is the substance made of only one kind of atom
- 13. chemical element is got a atomic number of 7?
- 14. is an electrically charged atom or group of atoms