chemestry words 26-50
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Angstrom | A unit of linear measure 1x10E-8cm, symbol (A with small circle on top)
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| Anhydrous | Without water of crystallization.
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| Anion | An ion attracted to the anode of an electrolyte cell; a negative ion.
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| Annealing | The process of heating a material to above a certain temperature and then slowly cooling it in order to decrease its hardness and brittleness.
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| Anti-Oxidant | A substance which retards oxidation.
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| Atom | The smallest particle of an element that can exist alone or in combination with other atoms of the same or of another element.
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| Atom, Excited | An atom which has absorbed a photon.
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| Atomic Mass | The mass of an atom relative to the carbon 12 scale.
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| Atomic Number | The number if protons in the nucleus of an atom.
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| Atomic Theory | A statement which includes information concerning the structure and properties of atoms, the kind of reactions they undergo, the kind of compounds they form and the properties of these compounds.
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| Avogadro Number | The number of carbon 12 atoms in exactly 12 grams of this nucleotide; 6.02x10E23
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| Barometer | An apparatus for measuring atmospheric pressure.
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| Base | (1) A substance which when added to water increases the hydroxide (OH-) ion concentration of the aqueous solution (2) A substance which acquires protons from another substance.
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| Beta Particle | An electron emitted from the nucleus of a radioactive element.
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| Binary | Pertaining to compounds made up of two elements.
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| Binary Compound | A compound consisting of only two elements.
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| Binding Energy | The energy released when a nucleus is formed from its component particles.
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| Bleaching | The operation by which color is partially or wholly removed from a colored material.
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| Boiling Point | The temperature at which the equilibrium vapor pressure of a liquid is equal to the prevailing atmospheric pressure.
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| Bond Energy | The energy required to break a chemical bond.
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| Brass | An alloy of copper and zinc.
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| Bright-line Spectrum | A spectrum consisting of a series of bright lines having frequencies characteristic of the atom present.
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| Bronze | An alloy of copper and tin.
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| Brownian Movement | The haphazard motion of colloid-ally dispersed particle as a result of collisions with the molecules of the dispersing medium.
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| Buffer | A substance which, when added to a solution, causes a resistance to any change in pH.
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