Across
- 3. the place where an organism lives
- 6. a substance which has only one type of atom
- 7. made of 2 atoms
- 8. reflected sound
- 9. when a astral body covers another astral body this happens
- 11. organ that makes and destroys substances
- 12. instrument used measure current
Down
- 1. insoluble substance formed when 2 soluble substances react together
- 2. the material which does not let electricity to pass through
- 3. substance that carries oxygen
- 4. the particles are closely packed
- 5. can be formed into different shapes
- 10. flow of electrons