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Unformatted text preview: gas to expand and cool until it drops below its boiling point. The liquefied gas must then be stored at low temperatures. 5. What are some uses of liquid nitrogen? ``Flash freezing'' foods, storage of biological specimens, refrigerant. 6. Why does the process of perspiration cool a person? The evaporation process absorbs energy from the skin. 7. Describe the element bromine in its three states. The vapor is orange, the liquid is red, and the solid is yellow. 8. What happens to the particles in bromine as it is cooled? The particles slow down and the attractive forces between particles increase. 9. What does the shape of a crystal tell us about its internal structure? The crystal structure is often an indication of the internal arrangement of atoms in the crystal....
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This note was uploaded on 11/14/2011 for the course CHEM ch 101 taught by Professor - during the Fall '10 term at Montgomery.
- Fall '10
- States Of Matter