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Water containing Fe3+, Ca2+, and Mg2+ ions, which forms precipates with soap.

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Mass Number

The sum of the numbers of protons and neutrons in an atom, an integer.

Law of Combining Volumes (Gay-Lussac's Law)

At constant temperature and pressure, the volumes of reacting gases (and any gaseous products) can be expressed as ratios of small whole numbers.

 

Photon

A packet of light or electromagnetic radiation, also called quantum of light.

 

Water Equivalent

The amount of water that would absorb the same amount of heat as the calorimeter per degree temperature increase.

Weak Electrolyte

A substance that conducts electricity poorly in a dilute aqueous solution.

Bronsted-Lowry Base

A proton acceptor

Anode

In a cathode ray tube, the positive electrode. Electrode at which oxidation occurs.

Diamonds Are Forever

Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?

Optical Activity

The rotation of plane polarized light by one of a pair of optical isomers.

 

Bond Energy

The amount of energy necessary to break one mole of bonds of a given kind (in gas phase).The amount of energy necessary to break one mole of bonds in a substance, dissociating the sustance in the gaseous state into atoms of its elements in the gaseous state.