Across
- 2. the smallest part of an element that is representative of the element
- 6. change of state from solid to a gas
- 7. metal dull,brittle element that does not conduct electricity
- 8. change of state from a solid to a liquid
- 9. characteristics that can be used to describe a substance
- 12. formula combination of symbols that represent a compound
- 13. metals group 1 element in the periodic table, not including hydrogen; most reactive of the metals
Down
- 1. substance that helps a chemical reaction to proceed more quickly
- 3. is anything has mass and occupies space
- 4. reaction chemical reaction that absorbs energy
- 5. group 17 elements in the periodic table; the most reactive non-metals
- 10. table a table in which the elements are organized by their physical and chemical properties
- 11. fourth state of matter