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24 Cards in this Set
- Front
- Back
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acid
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a substance that increased the hydrogen ion concentration of a solution (H+) and has a pH below 7
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adhesion
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attraction between different kinds of molecules
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atom
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the smallest particle of an element that has the characteristics of that element
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base
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a substance that reduces the hydrogen ion (H+) concentration of a solution and has a pH above 7
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chemical property
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when two elements are combined chemically the new compound will have different properties than the two elements did alone
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cohesion
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binding together of like molecules often by hydrogen bonds
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compound
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substance that is composed of atoms of two or more different elements that are chemically combined. the elements tat are chemically combined no longer have their original properties
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covalent bond
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stong bond created when two elements share electrons. by sharing electrons each atom becomes more stable. the new molecule formed has no overall charge
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diffusion
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net movement of particles from an area of higher concentration to an area of lower concentration
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electrons
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negatively charged particles found in the region of space surrounding the nucleus of an atom
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element
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substance that can't be broken down into simpler chemical substacnes
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energy
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ability to cause change or to perform work
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hydrogen bond
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a weak bond due to the attraction of opposite charges
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ionic bond
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attractive forces berween two ions of opposite charge
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mixture/solution
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combination of substances in which the individual components retain their own properties and don't combine chemically
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monomer
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the repeated units that serve as the building blocks of a polymer
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neutrons
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particles that do not have a charge found in the nucleus of an atom
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nucleus
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the center of an atom that contains protons and neutrons
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osmosis
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the diffusion of water across a selectively permeable
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pH
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measure of hydrogen ion concentration ranging from 0-14
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polar molecule/polarity
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molecule with an unequal distribution of charge; a molecule with a positive and negative end like water
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polymer
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large molecule formed when many small molecules bond together
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protons
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positively charged particles found in the nucleus of an atom
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surface tension
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measure of how difficult it is to stretch or break the surface of a liquid. water has a high surface tension because of hydrogen bonding of surface molecules
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