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40 Cards in this Set
- Front
- Back
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biology
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the study of life
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control
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comparative condition in an experiment where no variables are introduced
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ecology
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the study of interactions with each other and their human environment
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evolution
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gradual modification of populations over time
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homeostasis
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balanced, stable environment
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hypothesis
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a tentative explanation
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life science
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set of disciples that focus on the living world
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molecular biology
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study of individual molecules (DNA, RNA)
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organismal biology
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study of whole organisms
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physical sciences
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natural sciences not concerned with life
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physiology
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the functioning/work of an organism's structures and their relationships
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science
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a body of knowledge, also a learning process
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scientific method
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process of problem solving regarding an observation about the natural world
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theory
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general set of principles
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variable
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an adjustable condition in an experiment
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atomic number
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the number of protons/electrons in an atom
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covalent bond
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a bond formed by two atoms that share an electron
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ionic bond
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a bond formed when one atom surrenders an electron to another atom
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law of conversation of mass
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states energy is neither created nor destroyed
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electron
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a negatively charged sub-atomic particle
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proton
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a postively charged sub-atomic particle
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electronegativity
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the power of an atom to pull/attract electrons to itself
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element
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a substance that cannot be broken down
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free radical
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a covalent bond that shares it's electrons leaving one electron unpaired (absorbed by anti-oxidants)
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hydrogen bond
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covalent bond with an electronegative atom, oxygen or nitrogen
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ion
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a charged atom
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ionic bonding
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bond where one atom's electron is given away to another atom- they share electrostatic forces
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isotope
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an atom with a number of neutrons different from it's usual form
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mass
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the measure of how much matter an object has
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molecule
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two or more atoms
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neutron
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a no charged subatomic particle
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nonpolar covalent bond
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an atomic bond with two shared electrons in which the structure is BALANCED and electrons are shared equally
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nucleus
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the center of an atom
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polar covalent bond
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an atomic bond with two shared electrons in which the structure shares electrons unequally
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polarity
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difference in electrical charge, one end from another
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product
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the end results of a chemical equation
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reactants
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the chemical atoms that combine to produce a product
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solute
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what is being dissolved... (tablets)
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solvent
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what is doing the dissolving... (water)
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solution
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a homogeneous mixture of two or more kinds of molecules, atoms or ions
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