Across
- 4. Smoke is made of this element
- 6. This type of process is easy to reverse
- 7. This type of combustion produces a blue flame
- 8. A chemical made of only one type of atom
- 10. A poisonous gas released by incomplete combustion
- 13. The color of a flame releasing more heat
- 14. Oxidation of iron (a chemical process)
- 15. The color of a flame releasing less heat
- 16. A chemical process that uses stomach acid and enzymes
- 18. A chemical made of two or more different types of atoms bonded together
Down
- 1. A physical process using filter paper
- 2. The type of combustion that produces smoke (carbon particles)
- 3. A gas that is used a fuel in the home
- 5. A chemical process that occurs in cells (respiration is an example)
- 9. Energy is always_____from one form to another in chemical reactions
- 10. This type of process that is difficult to reverse
- 11. This is conserved in chemical reactions (remember Lavoisier!)
- 12. A physical process used to separate alcohol from water
- 17. Light, heat, sound, kinetic, electrical, sound are all forms of this