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The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.

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Law of Definite Proportions (Law of Constant Composition)

The law stating that a pure substance will always have the same percent by weight. Different samples of a pure compound always contain the same elements in the same proportions by mass.

Alkynes

Unsaturated hydrocarbons that contain one or more carbon-carbon triple bonds.

Periodicity

Regular periodic variations of properties of elements with atomic number (and position in the periodic table).

Debye

The unit used to express dipole moments.

Reaction Stoichiometry

Description of the quantitative relationships among substances as they participate in chemical reactions.

Electrical Conductivity

Ability to conduct electricity.

Dipole-dipole Interactions

Attractive interactions between polar molecules, that is, between molecules with permanent dipoles.

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.

xylose

A colorless, crystalline pentose sugar, C5H10O5, derived from xylan, straw, corncobs, etc., by treating with heated dilute sulfuric acid, and dehydrating to furfural if stronger acid is used.

Salt and its use in everyday life

Cooking salt is a product that is available in every kitchen, and it’s not as simple as it seems. The history of this product shows that it was valued like gold.