Across
- 3. Set of chemical symbols showing the elements present in a compound.
- 6. Subatomic particle found inside the nucleus of every atom.
- 7. Numbers that come after a symbol and tell you the number of atoms of that element.
- 8. Type of change where physical properties of matter change.
- 10. An organized array of chemical elements.
- 12. A chemical substance that cannot be broken down, it is a basic part of a whole.
Down
- 1. The basic unit of a chemical element.
- 2. Substance made up of various particles that occupies physical space.
- 4. A substance made up of two or more different elements that have chemically joined.
- 5. Total number of protons and neutrons in an atom.
- 9. A group of atoms bonded together and are the smallest particles of any substance.
- 11. Type of change that changes the type of matter.