Across
- 3. particles with a neutral charge
- 4. a heterogeneous mixture that settles
- 8. a heterogeneous mixture that never settles
- 10. atoms of the same element that have a different number of neutrons
- 11. a mixture in which two or more substances are evenly spread out
- 14. either an element or a compound
- 15. elements to the right side of the stair step line
- 16. made from atoms of two or more elements that have combined
Down
- 1. a mixture in which different materials can be easily distinguished
- 2. solids at room temperature, shiny, good conductors of heat
- 5. horizontal rows of elements on the periodic table
- 6. the positively charged center of an atom
- 7. positively charged particles
- 9. matter that is made up of only one type of atom
- 12. particles with a negative charge
- 13. have properties of both metals and non metals