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a substance that increases the H+ concentration when added to a water solution. Acids turn blue litmus paper red, have a pH of less than 7, and their aqueous solutions react with bases and certain metals to form salts
the electric or magnetic force exerted by oppositely charged particles, tending to draw or hold the particles together
big bang theory
a cosmological theory holding that the universe originated approximately 20 billion years ago from the violent explosion of a very small agglomeration of matter of extremely high density and temperature
the manipulation(as through genetic engineering) of living orgamisms or their components to produce useful usually commercial products (as pest resistant crops, new bacterial strains or novel pharmaceuticals)
a substance that speeds up or slows down the rate of reaction without being consumed or altered
a reaction or a change in a substance produced by chemical means that results in producing a different chemical
a substance made up of at least two different elements held together by chemical bonds that only be broken down into elements by chemical processes
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