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The enthalpy change for a reaction is the same whether it occurs in one step or a series of steps.

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Allotropic Modifications (Allotropes)

Different forms of the same element in the same physical state.

First Law of Thermodynamics

The total amount of energy in the universe is constant (also known as the Law of Conservation of Energy) energy is neither created nor destroyed in ordinary chemical reactions and physical changes.

Donor Atom

A ligand atom whose electrons are shared with a Lewis acid.

Polydentate

Refers to ligands with more than one donor atom.

Reactants

Substances consumed in a chemical reaction.

Particulate Matter

Fine divided solid particles suspended in polluted air.

Can water burn?

It’s known that water consists of atoms of molecules of oxygen and hydrogen. Since any compound with oxygen indicates the ability of the substance to burn, water is no exception. Thus, water has a surprising property of already "burnt out" compound.

Cathodic Protection

Protection of a metal (making ir a cathode) against corrosion by attaching it to a sacrifical anode of a more easily oxidized metal.

Linear Accelerator

A device used for accelerating charged particles along a straight line path.

Ioniztion

The breaking up of a compound into separate ions.