Different forms of the same element in the same physical state.
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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.
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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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Harmful Chemicals Found In Food
It's getting close to New Years and many people are starting to think about how to lose those extra pounds they managed to gain over the holidays. There are many sorts of diets and fads that have developed over the years from cutting carbs to cutting protein. Everyone has their own opinion as to...
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Chemistry of the sky
Chemistry can teach us about the composition of celestial bodies and determine their age.
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Interesting facts about metals
Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.
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Substance
Any kind of matter all specimens of which have the same chemical composition and physical properties.
Barometer
A device for measuring pressure.
Hydrogen
Discovered : by Henry Cavendish in 1766.
Isolated in London, UK.
Origin : The name is derived from the Greek ‘hydro genes’, meaning water forming.
Description :A colourless, odourless gas that burns and can form an explosive mixture with air. It is currently manufactured from methane gas, but is also produced by the electrolysis of water and aqueous salts. The gas is used to make such key materials as ammonia, cyclohexane and methanol, which are intermediates in the production of fertilisers, plastics and pharmaceuticals. Some see hydrogen gas as the clean fuel of the future - generated from water and returning to water when it is oxidised. Hydrogen-powered fuel cells are increasingly being seen as pollution-free sources of energy.
Lead Storage Battery
Secondary voltaic cell used in most automobiles.
Standard Molar Volume
The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.
Cathode
Electrode at which reduction occurs in a cathode ray tube, the negative electrode.
Bronsted-Lowry Acid
A proton donor.
Miscibility
The ability of one liquid to mix with (dissolve in) another liquid.
Distillation
The separation of a liquid mixture into its components on the basis of differences in boiling points. The process in which components of a mixture are separated by boiling away the more volitile liquid.
Law of Conservation of Matter
There is no detectable change in the quantity of matter during an ordinary chemical reaction.
