Across
- 4. discovered the nucleus of an atom
- 9. packets of light given off by excited atoms
- 10. a table in which chemical elements are arranged by atomic number
- 14. element with atomic number 7 and atomic mass 14.01
- 15. easily bent
- 16. a substance that speeds up a chemical reaction
- 18. when two liquids do not mix
- 19. discovered the electron
- 20. a mixture containing particles that settle out
Down
- 1. shiny
- 2. the energy released from the interaction of cations and anions is called the _____
- 3. reversible reactions have a _____
- 5. a solid produced during a chemical reaction
- 6. reactions that require energy
- 7. C3H8
- 8. the ability of a substance to dissolve in a solvent and form a solution
- 11. the most probable location of an electron
- 12. the change in heat of the products from the reactants
- 13. the concave surface of a liquid
- 17. the temperature and pressure at which the solid, liquid, and gas forms of a substance coexist