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Substances that flow freely, gases and liquids.

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  • Chemistry of the sky

    Chemistry can teach us about the composition of celestial bodies and determine their age.

  • The most expensive metal in the world

    Do you think the most expensive metal is gold? No! On earth there are more valuable metals. But we need to divide the value of metals that occur in nature, and metals - isotopes, which are obtained in special laboratories. Let’s look at natural metals first.

  • Use of diamonds

    Diamond is a crystalline modification of pure carbon formed in the deep interior of the Earth, in the upper mantle at depths of more than 80-100 kilometers, at exceptionally high pressure and temperature. It is the most precious stone, the hardest and most wear-resistant mineral, the most...

  • 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...

  • Ozone

    We breathe 24 hours a day, 7 days a week, consuming about 25 kg of air every day. It turns out that we practically predetermine our health by the air we breathe.



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Film badge

A small patch of photographic film worn on clothing to detect and measure accumulated incident ionizing radiation.

Covalent Bond

Chemical bond formed by the sharing of one or more electron pairs between two atoms.

Electronic Transition

The transfer of an electron from one energy level to another.

Nitric Acid

HNO3: A strong acid, it is toxic and can cause severe burns. Transparent colorless or yellowish, fuming, suffocating, caustic and corrosive liquid. Nitric acid boiling point is 83C. A 70 percent solution is used in the S.S.E. laboratory for junction depth measurements. Nitric acid is also present in the metal etch solution used for the Aluminum etch procedure.

Limiting Reactant

Substance that stoichiometrically limits the amount of product(s) that can be formed.

Phenol

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

 

Electrical Conductivity

Ability to conduct electricity.

Binary Compound

A compound consisting of two elements, may be ionic or covalent.

Flash Point

The temperature at which a liquid will yield enough flamable vapour to ignite. There are various recognized industrial testing methods, therefore the method used must be stated.

Dilution

Process of reducing the concentration of a solute in solution, usually simply by mixing with more solvent.