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21 Cards in this Set
- Front
- Back
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PH scale
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A measurement system that indicates the concentration of H ions in a solution
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compound
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A substance formed by the chemical combination of 2 or more elements in definite porportions
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ions
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positively and negatively charged atoms
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molecule
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smallest unit of most compounds
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cohesion
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An attraction between molecules of different substances
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adhesion
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an attraction between molecules of different substances
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mixture
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a material composednof 2 or more elements or compounds that are physically mixed together but not chemically combined
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solution
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mixture of 2 or moresubstances in which the molecules are evenly distributed
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solute
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the substance that is dissolved in a solvent to make a solution
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solvent
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the substance in which the solute is dissolved to make a solution
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suspension
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mixtures of water and nondissolved material
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acid
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any compound that forms H in a solution
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base
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any compound that forms hydroxide ions in a solution
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atom
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the basic unit of matter
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electron
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a negatively charged particle
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proton
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a positively charged particle
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neutron
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a particle with neutral charge
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element
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a pure substance that consists entirelly of one type of atom
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radioactive
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the atoms nuclei is unstable and breaks down at a constant rate
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isotopes
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Atoms of the same element that differ in the number of neutrons
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ionic bond
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formed when one or more electrons are transferred from one atom to another
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