1. Name the phase change that occurs when a solid changes into a gas, without becoming a liquid. __

2. True or False – A liquid has definite shape and definite volume.

3. True or False – A gas has definite shape, but no definite volume.

4. A is similar to a gas, but conducts electricity. 5. Boyle’s Law shows a relationship between the _ and volume of a gas.

6. Charles’ Law shows a relationship between the ______________ and volume of a gas.

7. When putting a balloon in a warm oven, the temperature goes from 70oto 140o. Will the 200 ml balloon shrink or expand?

1.in physics, conversion of a substance from the solid to the gaseous state without its becoming liquid. An example is the vaporization of frozen carbon d iixide (dry ice) at ordinary atmospheric pressure and temperature.

2. A solid has definite volume and shape, a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape. The change from solid to liquid usually does not significantly change the volume of a substance.

3. Like liquids, gases have no definite shape, but unlike solids and liquids, gases have no definite volume either. The change from solid to liquid usually does not significantly change the volume of a substance.

4.

5. Boyle's Law describes the inverse relationship between the pressure and volume of a fixed amount of gas at a constant temperature.

6.

7.