Across
- 5. When an atom gives up or gains electrons it becomes a(n) ________.
- 6. __________ molecules are molecules who have opposing charges at each end.
- 9. A change in state without altering its basic nature.
- 12. When two or more atoms share electrons, they form a ___________.
- 14. Positively charged particles.
- 16. When different elements combine we call that a ____________.
- 17. __________ energy is the energy of motion.
- 19. When an ion or molecule has an unpaired electron in its outer shell.
- 21. Each element is made of _________.
- 22. Negatively charged particles.
- 23. A negatively charged atom and positively charged atom will be electrically attracted to each other through a(n) _______ bond.
- 24. A liquid or gas where material has been dissolved in.
Down
- 1. Has a definite volume but not shape.
- 2. Are proteins that speed up chemical reactions.
- 3. The shared electron between the two atoms is called a __________ bond.
- 4. Has no definite shape or volume.
- 7. A change that alters its basic nature.
- 8. Particles with no charge.
- 10. When atoms interact by exchanging electrons, they form ________ bonds.
- 11. Has a definite shape and volume.
- 13. Are chemical compounds in the body that help maintain proper pH levels.
- 15. _________ energy is stored energy.
- 18. Atoms of the same element, that have different number of neutrons.
- 20. The ability to do work.