Across
- 2. a subatomic particle
- 3. number of protons and neutrons
- 5. very small things that make up everything
- 8. test for hydrogen
- 11. formed by elements or parts
- 13. drawn from wires
- 14. part of something abstract
- 16. central or most important part of substance
- 17. a stable subatomic particle
- 19. a substance made from mixing other together
Down
- 1. giving off or reflecting light
- 4. a stable substance with charge of negative electricity
- 6. elements of metal and nonmetal
- 7. number of protons in a atom
- 9. flow of electric charge
- 10. Bendy
- 12. Hard,shiny,malleable,fusible,ductile,material,solid
- 15. two or more atoms bonded
- 18. opposite of metal