Across
- 6. two or more atoms chemically joined
- 7. a table of chemical elements
- 11. a row of elements in the periodic table
- 12. a small gas burner used as lab equipment
- 13. a small portion of matter
- 16. anything that occupies space and has mass
Down
- 1. the number of protons in the nucleus of an atom
- 2. number of protons and neutrons in an atomic nucleus
- 3. abbreviations for chemical elements
- 4. a small glass tube used for experiments in science
- 5. substance containing only one type of atom
- 8. a scientific procedure to test something
- 9. the amount of space occupied by a substance
- 10. a column of elements in the periodic table
- 14. the smallest particle of an element
- 15. substance containing two or more different elements