Biology Unit 1 Inorganic Chemistry Vocab Quiz – Flashcards
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atomic number
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The number of protons in an atom
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mass number /atomic mass
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The sum of the number of protons plus neutrons in an atom
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ion
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An atom that carries either a positive or a negative charge. It is formed when the number of e´ is not equal to the number of protons in the atom.
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isotope
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Atoms of the same element that contain different numbers of neutrons are isotopes of the element. This also makes their atomic masses different.
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radioisotope
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An isotope with an unstable nucleus. The nucleus will release particles or radiant energy, or both.
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chemical bond
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This is an attraction between two or more atoms. It is usually due to the proton / e' makeup of the atoms involved, but it can also be caused by magnetic attraction.
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element
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A substance that cannot be broken down chemically into a simpler kind of matter, the simplest form of matter.
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compound
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A substance that consists of atoms of two or more elements that are joined by chemical bonds.
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chemical reaction
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The process of breaking chemical bonds or forming new bonds, or both.
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reactant
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Any atom, ion etc. that is involved in a chemical reaction.
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chemical equation
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A combination of symbols, formulas and numbers which show how reactants change during chemical reactions. The arrow indicates the direction of the reaction.
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molecular formula
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This formula will tell you the number and type of atoms present in the compound.
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structural formula
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A diagram that tells you the number, type and configuration of atoms present in the compound.
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isomer
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One of two or more compounds that have the same molecular formula but different configurations and properties.
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inorganic compounds
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Compounds that are not usually produced by organisms
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organic compounds
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Compounds that are usually produced by organisms and contain carbon.
