Matter Review

3. – the changing of a gas from a solid to a liquid without going through the liquid stage
5. – adding heat so that a solid becomes a liquid
7. – when a liquid cools and becomes a solid as a result of removing heat
9. – atoms and molecules are tightly packed together. They have a fixed volume and shape. The particles can vibrate, but not move around.
11. – the fourth state of matter; a super-heated gas composed of electrically charged particles. It is stripped of its electrons and condensed by heat and pressure
13. – the change from a solid to a gas without passing through the liquid stage (example: dry ice)
14. – the ability of one substance to dissolve in another
17. – a liquid or solid becomes a gas

1. zero – lowest possible temperature where there is complete absence of heat and motion even at the atomic and molecular level
2. – atoms are spread out, have no definite shape or volume and fill whatever container they are in
4. – the process by which a substance changes from a gas to a liquid. As a gas cools, it loses heat.
6. ice – is solid carbon dioxide and is an example of sublimation
8. – one of the properties of matter; the quality of having opposite charges for different points of a molecule.
10. – the resistance of a liquid to flow (liquid water has low viscosity)
12. – the atom particles have some space in between them. They have no definite shape but a definite volume and will take the shape of the container they are in. More energy in the atoms and molecules than a solid, and can flow easily
15. – an atom that has gained or lost one or more electrons
16. capacity – the ability of a substance to store and release energy. Water has a high heat capacity