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Acids produce H+ ions when dissolved in water; they are sour and corrosive
Alchemy- an ancient, mystical practice that preceded the science of chemistry. Alchemists tried to convert common, inexpensive metals into gold.
Atom basic building block of all substances in the universe; smallest complete unit of matter
Atomic mass the total number of protons and neutrons in the nucleus
Atomic number the total number of protons in the nucleus; should be the same as the number of electrons because atoms want to be neutral
Bases – produce OH (hydroxide) ions when dissolved in water; they are bitter and can be corrosive
Chemical equation describes chemical reactions by using chemical formulas
Coefficient number placed before chemical symbols
Compound substance made of heterogeneous molecules that are bonded together chemically. (hetero = different) The elements always come in definite proportions.
Covalent bonds bonds between two nonmetals
Electrons negatively charged particles located outside of the atomic nucleus
Element made of only one type of atom
Family a vertical column on the periodic chart
Gas form of matter with indefinite shape and volume
Ion when the number of electrons varies within the atoms of an element
Ionic bonds bonds between metal and nonmetaL
Isotope when the number of neutrons varies within the atoms of an element
Liquid form of matter with indefinite shape and definite volume
Litmus paper - a pH indicator that turns red in the presence of acids and turns blue in the presence of bases
Created by: artisteacher