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Beginning in the third energy level, aset of five degenerate orbitals per energy level, higher in energy than s and p orbitals of the same energy level.

 

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Hydrate

A solid compound that contains a definite percentage of bound water.

Hydrometer

A device used to measure the densities of liquids and solutions.

Mass Spectrometer

An instrument that measures the charge-to-mass ratio of charged particles.

Formula Weight

The mass of one formula unit of a substance in atomic mass units.

 

Metal

An element below and to the left of the stepwise division (metalloids) in the upper right corner of the periodic table, about 80% of the known elements are metals.

Supercooled Liquids

Liquids that, when cooled, apparently solidify but actually continue to flow very slowly under the influence of gravity e.g glass.

Three ways to make patina at home

The first way is ammonia patination. To do this, take a plastic container. Put a couple of paper or ordinary towels at the bottom. Moisten them with ammonia. Then sprinkle with large table salt.

Semiconductor

A substance that does not conduct electricity at low temperatures but does so at higher temperatures.

Mass Deficiency

The amount of matter that would be converted into energy if an atom were formed from constituent particles.

Chemical Safety

People use chemicals every day for a wide array of purposes, which can include work and house hold duties. Many of us fail to realize that we are actually handling potentially deadly chemicals when we simply clean the bathroom or wash the car.

This brings to mind the reason why chemical safety is so important and why you should always use the chemicals that you own for their intended purpose only. Otherwise, the repercussions could be disastrous to say the least. There are specific things that you and those around you should do when handling, storing or using chemicals in nearly every form.