Across
- 2. and carbon dioxide
- 7. neutral subatomic particle
- 9. a part or aspect of something abstract, especially one that is essential or characteristic
- 10. A bond between atoms or ions that allows molecules to form
- 11. negatively charged ion
- 12. group 1 on periodic table
- 14. negative subatomic particle
- 15. a thing that is composed of two or more separate elements; a mixture.
- 17. positive subatomic particle
- 18. dissolved in water
Down
- 1. positively charged ion
- 2. group 17 on periodic table
- 3. When a compound combines with oxygen gas to form water,
- 4. group 2 on periodic table
- 5. the basic unit of a chemical element.
- 6. A chemical bond formed when two atoms share two
- 8. able to be hammered or pressed permanently out of shape without breaking or cracking.
- 10. all of the atoms (or ions) are arranged in a regular grid pattern
- 13. forms of the same element that contain equal numbers of protons but different numbers of neutrons
- 16. group 18 on periodic table