Across
- 2. - A state of matter characterized by a fixed shape and volume.
- 3. - The phase change from a liquid to a solid when heat is removed, causing particles to lose energy and become more closely packed.
- 5. - A high-energy state of matter consisting of ionized particles (positive ions and free electrons). Occurs at extremely high temperatures, such as in stars or lightning.
- 9. - Anything that has mass and takes up space.
- 10. - The phase change in which a solid transforms directly into a gas without passing through the liquid phase. An example is dry ice
- 11. - A molecule composed of two atoms, which may be the same (e.g., O2O_2,
- 12. - A state of matter with neither a definite shape nor volume.
- 14. - A state of matter with a definite volume but no fixed shape
Down
- 1. - The phase change in which a gas transforms into a liquid as it loses heat. An example is water vapor forming dew.
- 4. - The phase change in which a gas transforms directly into a solid without passing through the liquid phase. An example is frost formation.
- 6. - The phase change from a solid to a liquid when heat is applied, as the particles gain energy.
- 7. - A molecule or ion composed of three or more atoms bonded together.
- 8. - The process by which a liquid changes into a gas at its surface, occurring below the boiling point, as particles gain enough energy to escape the liquid phase.
- 9. - A group of two or more atoms bonded together chemically, representing the smallest unit of a compound that retains its chemical properties.
- 13. - The smallest unit of an element that retains the chemical properties of that element..