A technique for measuring the temperature, direction, and magnitude of thermal transitions in a sample material by heating/cooling and comparing the amount of energy required to maintain its rate of temperature increase or decrease with an inert reference material under similar conditions.
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Diamonds Are Forever
Diamonds are still a girl's best friend, right? We love the shiny gems. They are the most popular rocks sold today. But what exactly are they, anyway? Where do they come from? What else are they used for?
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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...
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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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Why do copper products change color, and what is the name of the process?
Probably, every person wants to know, why over time the copper turns green and becomes bloomed. This is easy to explain: that film is called patina.
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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...
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Polymerization
The combination of many small molecules to form large molecules.
yttrium metal
Any of a subgroup of rare-earth elements, of which the cerium and terbium metals comprise the other two subgroups.
Group
A vertical column in the periodic table, also called a family.
Ternary Compound
A compound consisting of three elements, may be ionic or covalent.
Nonelectrolyte
A substance whose aqueous solutions do not conduct electricity.
Freezing Point Depression
The decrease in the freezing point of a solvent caused by the presence of a solute.ing Point
A brief history of dyeing fabrics
Dyeing fabrics is giving the fibers a homogeneous color that has a certain degree of strength. The methods of dyeing are very diverse, depending on the properties of the dyes and the dyed fibers.
Two chemistry egg tricks
The French have a saying: "You cannot cook an omelet without breaking eggs."Chemists hearing this proverb totally disagree. There is nothing easier than cleaning an egg without breaking its shell.
Probably our readers have already guessed how to do this, as it’s known that the hard shell of the egg is carbon dioxide, like chalk and marble.
Avogadro's Law
At the same temperature and pressure, equal volumes of all gases contain the same number of molecules.
Joule
A unit of energy in the SI system. One joule is 1 kg. m2/s2 which is also 0.2390 calorie.
