Across
- 1. a substance that has no fixed size or shape
- 3. anything that takes up space
- 5. a negatively charged subatomic particle
- 6. the smallest part of a substance
- 8. a positively charged subatomic particle
- 11. shell the outside part of an atom
- 13. middle of the cell
- 15. cloud model - the area around the nucleus where the electrons are found
- 17. non metal element
- 18. electron energy level of an atom
- 19. a state of matter that retains its shape
- 20. metal element
Down
- 2. theory - matter is composed of discrete units called atoms
- 4. a substance that cannot be broken down
- 7. property that comes from electromagnetic forces
- 8. a small part of matter
- 9. forces when a conductor is placed in a magnetic field and current flows in the conductor
- 10. property a property of matter that can be observed and measured without changing the property
- 12. a type of matter that fills the space its in
- 13. a neutral charged subatomic particle
- 14. property a particular substance that can be observed in a chemical reaction
- 16. mass the quantity of matter contained in an atom