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

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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.

xenon hexafluoride

A colorless, crystalline compound, XeF6, that melts at 50°C to a yellow liquid, and boils at 75°C.

Bomb Calorimeter

A device used to measure the heat transfer between system and surroundings at constant volume.

Suspension

A heterogeneous mixture in which solute-like particles settle out of solvent-like phase some time after their introduction.

Barometer

A device for measuring pressure.

Quantum Mechanics

Mathematical method of treating particles on the basis of quantum theory, which assumes that energy (of small particles) is not infinitely divisible.

Periodic Table of Elements

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

Stoichiometry

Description of the quantitative relationships among elements and compounds as they undergo chemical changes.

Ionization Isomers

Isomers that result from the interchange of ions inside and outside the coordination sphere.

Oxidizing Agent

The substance that oxidizes another substance and is reduced.