Across
- 2. Ionized gas consisting of approx. equal numbers of positive charged ions and negative charged electrons
- 6. Table arrangement of chemical elements, ordered by atomic number
- 8. Notation of one or two letter representing a chemical element
- 9. A substance that flows freely, having a consistency like water
- 11. A group of atoms bonded together
- 12. A thing that is composed of two or more elements
- 13. A number of people or things that are put together
- 14. Particle with a charge of negative electricity
- 15. A solid material that is typically hard, shiny and durable
Down
- 1. Everthing in the universe that has mass and volume is made of this.
- 3. Having 3- dimensions; a shape
- 4. An element whose properties are intermediate between metals and non-metals
- 5. A substance made by mixing other substances together
- 7. Number of protons in the nucleus of an atom
- 10. Particle of about the same mass as protons
- 14. Substance that cannot be chemically broken down