Across
- 4. A vertical column in the periodic table, also known as a family of elements
- 7. The force of attraction between two atoms that holds them together
- 8. A notation that indicates the composition of a compound
- 9. The total number of protons and neutrons in the nucleus
- 16. A chart in which all known elements are organized by physical and chemical properties
- 17. A particle with no charge which is located in the nucleus of an atom
- 18. An element that is shiny, opaque, and able to conduct electricity and heat
Down
- 1. A representation of a system that helps us predict how the system behaves
- 2. A mixture in which the different components can be seen as individual substances
- 3. A unit used to measure atomic mass
- 5. A negatively charged particle in an atom
- 6. The state of a material that is a mixture of more than one element or compound
- 7. A material in which atoms of different elements are bonded to one another
- 9. A combination of two or more substances in which each substance retains its properties
- 10. A homogeneous mixture in which all components are dissolved in the same phase
- 11. A material consisting of only one type of atom
- 12. A term denoting the location of particles in the nucleus
- 13. An abbreviation for an element or atom
- 14. A positively charged particle located in the nucleus of an atom
- 15. A horizontal row in the periodic table