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Colloidal suspension of a solid dispersed in a liquid, a semirigid solid.

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Gel

Colloidal suspension of a solid dispersed in a liquid, a semirigid solid.

Bubbles

Have you ever noticed that soap bubbles go up in winter and fall down in summer? The reason is that warm air is lighter than cold. And in winter the difference between the air temperature in the room (especially near the windows) and the one you exhale into the bubble is enough to overcome the heaviness of its shell.

Hydrate

A solid compound that contains a definite percentage of bound water.

Barometer

A device for measuring pressure.

Electrical Conductivity

Ability to conduct electricity.

Voltaic Cells

Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.

 

Ketone

Compound in which a carbonyl group is bound to two alkyl or two aryl groups, or to one alkyl and one aryl group.

Metallurgy

Refers to the overall processes by which metals are extracted from ores.

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Capillary

A tube having a very small inside diameter.