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Amount of energy that must be absorbed by reactants in their ground states to reach the transition state so that a reaction can occur. In other words, activation energy is the minimum energy required for a chemical reaction to occur.

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xylan

The pentosan occurring in woody tissue that hydrolyzes to xylose: used as a source of furfural.

Handmade crystal glass as a work of art

In order for the colored crystal to open in all its beauty and sparkle with every face natural light is required. Handmade crystal glass has specific tactile and aesthetic properties - it is pleasant to touch, it seems to radiate heat. To appreciate the quality and beauty of such things, of course, it is not enough to look at the picture.

Heterogeneous Mixture

A mixture that does not have uniform composition and properties throughout.

Copper

Discovered : known to ancient civilisations
Origin : The name is derived from 'Cuprum', the Latin name for Cyprus.

Activation Energy

Amount of energy that must be absorbed by reactants in their ground states to reach the transition state so that a reaction can occur. In other words, activation energy is the minimum energy required for a chemical reaction to occur.

Phenol

Hydrocarbon derivative containing an [OH] group bound to an aromatic raing.

 

Temperature

A measure of the intensity of heat, i.e. the hotness or coldness of a sample. or object.

Photochemical Oxidants

Photochemically produced oxidizing agents capable of causing damage to plants and animals.

Atomic Weight

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

Osmotic Pressure

The hydrostatic pressure produced on the surface of a semipermable membrane by osmosis.