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40 Cards in this Set

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