Across
- 6. A blend of 2 or more substances
- 9. Number/ This tells you the element and the number of protons
- 11. Does not allow electrons to flow
- 12. A material that does not dissolve in something else
- 13. control group/ A substance we know should change
- 15. Is a characteristic of a substance that doesn’t change
- 16. The part of an atom with no charge
- 19. How a substance interact with fire
- 20. Light emitting diode
- 22. A power source
- 23. Its particles are slightly apart
- 24. The part of an atom with a positive charge
- 25. The center of an atom holding the proton and neutron
Down
- 1. Allows electrons to flow
- 2. control group/ A substance we know should not change
- 3. Anything that has mass and takes up space
- 4. A system that uses water to grow plants
- 5. Its particles are tightly packed together
- 7. Electron/ Electrons found in the outer ring
- 8. Made up of only one material
- 10. A device that permits current to flow in one direction
- 14. the tiny things that make up matter
- 17. The negative part of an atom
- 18. How much matter is in a certain space
- 21. A material that can dissolve in something else