Across
- 2. An electron found on the outermost energy ring of an atom
- 5. A substance made of atoms
- 7. A table of the chemical elements arranged in an order
- 9. A substance composed of 2 or more elements that are chemically combined together
- 12. A measure on how easily an element will bond with other elements to form compounds
- 14. The large number in front of a chemical symbol in reaction equations.
- 18. A negatively charged particle
- 19. A particle with no charge
- 20. A positively charged particle
Down
- 1. Has properties of both metals and nonmetals
- 3. Causes a substance to change into an entirely different substance
- 4. Consisting of three parts - protons, neutrons, and electrons
- 6. Elements in the same vertical column of the periodic table
- 8. Atoms of 2 or more elements, which are covalently bonded together.
- 10. The number of protons in one atom of a particular element
- 11. The quantity of matter contained in an atom of an element
- 13. The process by which a substance changes to produce a different substance
- 15. One of the starting substances in a chemical reaction
- 16. One of the substances made during a chemical reaction
- 17. Elements in the same horizontal column of the periodic table