Environmental Science
Across
- 2. large body of matter with no definite shape
- 5. atoms of the same element with different numbers of neutrons
- 8. compounds formed by sharing electrons are said to be held together by...
- 9. the total number of protons and neutrons in an element
- 11. anything that occupies space and has mass
- 13. a weak chemical bond that forms when hydrogen atoms that are covalently bonded to one atom are attracted to another atom
- 14. particles that contain more that one atom
- 15. molecules that contain more than one element
Down
- 1. one side is more positive and the other is more negative in a...
- 3. the number of protons in the nucleus of a particular element
- 4. a list of all of the elements currently known
- 6. attraction between ions of opposite charges forms a chemical bond called...
- 7. the smallest particle that can contain the chemical properties of an element
- 10. substance composed of atoms that can't be broken down
- 12. spontaneous release of material from the nucleus in radioactive isotopes