Across
- 5. Negative Charge
- 7. Positive Charge
- 9. Energy is released or give off
- 11. Absorb energy so feels colder
- 13. The ingredients before the reaction begins
- 16. The number atoms present BEFORE and AFTER a reaction takes place
- 17. Motion & Chemical Reactions
- 20. Made up of atoms
- 21. (on the P.T.) each numbered row is a...
- 22. A solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
- 24. gaseous elements helium, neon, argon, krypton, xenon, and radon are...
- 25. Most important part of an atom
Down
- 1. The ingredients produced after reaction takes place
- 2. Subatomic particles, neutral charge
- 3. formed a shared pair, bond
- 4. (on the P.T.) a column of elements in the periodic table of the chemical elements.
- 6. Something that is composed of two or more separate element, a mixture
- 8. Mendeleev One of creators of periodic table
- 10. Really small, source of nuclear energy
- 12. They intermediate between those of metals and solid nonmetals. They are electrical semiconductors
- 14. What this is called if repeatedly goes around and around
- 15. An element or substance that is not a metal
- 18. mass The weight of an element
- 19. Element abbreviation
- 23. There are 118 of these