Across
- 3. a pure substance that is formed when two or more different elements combine; can usually be separated into component elements by chemical reaction
- 5. the smallest unit of an element that has the properties of that element
- 6. a subatomic particle with a negative charge
- 9. the temperature at which a liquid changes into a gas
- 11. subatomic particles with no electric charge, located within the nucleus of the atom
- 13. matter phase change from solid directly to gas
- 17. the process by which a gas changes into a liquid
Down
- 1. a pure substance that cannot be broken down into simpler substances by chemical reactions
- 2. the process in which matter changes from a liquid to a gas
- 4. the temperature at which a solid turns into a liquid the process in which matter changes from a liquid to a gas (related word: evaporate)
- 7. the temperature at which a liquid turns into a solid
- 8. a subatomic particle with a positive charge that is located in the nucleus of an atom
- 10. a state of matter without any defined volume or shape (related word: gaseous)
- 12. matter with a fixed volume and shape
- 14. a state of matter with a defined volume but no defined shape
- 15. two or more atoms joined together (related word: molecular)
- 16. material that has mass and takes up some amount of space