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The reaction in which hydrogen adds across a double or triple bond.

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Saccharate

A compound formed by interaction of sucrose with a metallic oxide, usually lime, and useful in the purification of sugar.

 

Voltage

Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.

Endothermicity

The absorption of heat by a system as the process occurs.

Joule

A unit of energy in the SI system. One joule is 1 kg. m2/s2 which is also 0.2390 calorie.

Radioactive Dating

Method of dating ancient objects by determining the ratio of amounts of mother and daughter nuclides present in an object and relating the ratio to the object?s age via half-life calculations.

Exothermicity

The release of heat by a system as a process occurs.

Nickel-cadmium cell (Nicad battery)

A dry cell in which the anode is Cd, the cathode is NiO2, and the electrolyte is basic.

Substance

Any kind of matter all specimens of which have the same chemical composition and physical properties.

 

Heisenberg Uncertainty Principle

It is impossible to determine accurately both the momentum and position of an electron simultaneously.

Condensed Phases

The liquid and solid phases, phases in which particles interact strongly.