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A substance whose aqueous solutions conduct electricity.

 

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Atomic Weight

Weighted average of the masses of the constituent isotopes of an element, The relative masses of atoms of different elements.

Acid

A substance that produces H+(aq) ions in aqueous solution. Strong acids ionize completely or almost completely in dilute aqueous solution. Weak acids ionize only slightly. Chemicals or substances having the property of an acid are said to be acidic.

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.

Avogadro's Law

At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.

Flammable

A liquid as defined by NFPD and DOT as having a flash point below 37.8°C (100°F).

Mechanism

The sequence of steps by which reactants are converted into products.

Calorimeter

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

Colloid

A heterogeneous mixture in which solute-like particles do not settle out.

Essential Oil

A plant extract that has a distinctive odour or flavour.

Square Planar Complex

Complex in which the metal is in the center of a square plane, with ligand donor atoms at each of the four corners.