Across
- 1. negative part of an atom
- 4. mixture in which two or more pure substance are not evenly mixed
- 5. symbol 1 or 2 letters that represent an electron
- 6. the number to the left of the chemical formula
- 10. a mixture in which two or more pure substances are evenly mixed
- 12. elements and compounds
- 13. the ability of a substance to be hammered or rolled into sheets
- 16. anything that has mass and takes up space
- 17. neutral part of an atom inside the nucleus
Down
- 1. a substance that consists of only one type of atom
- 2. a substance containing atoms of two or more different elements connected together
- 3. a molecule that consists of two elements that are the same
- 7. number the number of protons in an element
- 8. the ability of a substance to allow heat or electricity to pass through
- 9. a representation of a phenomenon, a system , a process or a solution to a problem
- 11. number the number of protons plus neutrons
- 14. a small particle that is the building block of matter.
- 15. positive part of an atom