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Physics

Thermometry

We call Thermology the part of physics that studies the phenomena related to heat, heating, cooling, physical state changes, temperature changes, etc. Thermometry is the part of thermology focused on the study of temperature, thermometers and thermometric scales. Temperature Temperature is the quantity that characterizes the thermal state of a body or system.
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Chemistry

What is atom and molecule?

To better understand the concept of atom and molecule, imagine that you have to split a piece of something, for example water. And then it goes on dividing, dividing and dividing… until it reaches a portion that it can no longer divide. This portion we call the molecule. Molecule - Smallest portion of a substance, containing the same composition as this substance.
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Chemistry

Synthetic Polymers (continued)

Polyester is a polymer obtained from an esterification reaction between a polyacid and a polyalcohol, repeated many times. They are used in the production of fishing rods, textile fibers, etc. Commercially, it is known as terilene or tergal. To obtain this polymer, terephthalic acid can be reacted with ethylene glycol.
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Physics

Dictionary - L

Liquid: Flowing or flowing, always tending to level and take the shape of the vessel that contains it. Syrup, viscous. lithosphere: The solid part of the earth; Earth's crust. lumen: A unit of luminous flux, which is the light emitted by a uniform, infinitely small focus of the intensity of a decimal candle, radiating within a solid angle that intersects an area of ​​1 m 2 over the 1 m radius sphere. , which focuses on the focus.
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Chemistry

Water (continued)

Home Purification When there is no water treatment network in certain localities, artesian wells are common. But to dig the well, it is necessary to choose a location away from garbage dumps, sewers, pits and livestock. The interior of the well should be lined with a semipermeable wall (brick) with its base at a height of 40cm from the floor.
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Chemistry

Kekulé Postulates

German chemist Friedrich August Kekulé studied the main features of the carbon atom. He explained the properties in the form of three postulates: Since the carbon atom has 4 electrons in its last shell, it has four free valences and can make four covalent bonds, forming molecules.
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