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General chemistry

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General chemistry

Conversion factor

Chemistry; General chemistry

A conversion factor is a fraction that relates one unit to another. Multiplying a measurement by a conversion factor changes the units of the measurement. For example, since 1 in = 2.54 cm.

Joule

Chemistry; General chemistry

The SI base unit of temperature, defined by assigning 273.16 K to the temperature at which steam, ice, and water are at equilibrium (called the triple point of water). The freezing point of water ...

Semipermeable membrane

Chemistry; General chemistry

A membrane that allows some but not all of the components in a mixture to pass through it. Semipermeable membranes are used in dialysis .

Atomic theory

Chemistry; General chemistry

An explanation of chemical properties and processes that assumes that tiny particles called atoms are the ultimate building blocks of matter.

Fuel cell

Chemistry; General chemistry

A device that converts the chemical energy obtained from a redox reaction directly into electrical energy.

Percent yield

Chemistry; General chemistry

Percent yield equals experimental yield divided by theoretical yield times 100%.

Voltaic cell

Chemistry; General chemistry

An electrochemical cell that spontaneously generates electrical energy. In a voltaic cell, the value of Gibbs free energy is below 0.

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