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54 Cards in this Set

  • Front
  • Back
changes between gaseous, liquid or solid state
change of state
the ability of a substance to undergo a change that alters its identity
chem. property
describes the process to absorb heat
endothermic energy
describes the process that releases heat
exothermic
the vertical columns of elements in the periodic table numbered consecuatively from 1 to 18
groups/families
the energy of an object in motion
kinetic energy
a chemical compound that contains the same in exactly the same proportions by mass, regardless of the size
law of definite comp
the measure of the quantity of matter
mass
anything that has mass or occupies space
matter
a combo of 2 or more kinds of matter, each of which retains its own compositions or properties
mixture
a property that can be observed or measured w/out altering the idenity of the material
physical property
a solid that seperates from a solution
percipitate
the new substance or substances produced by a chemical enzyme reaction
products
the substances that undergo a chemical reaction
reactants
the measure of the earths gravitational attraction for matter
weight
describe the differrence between heat and temperature
heat-energy that couses the particels to move
temperature-measurment of average motion of particles
the amt of force to move 1 neutron, 1 meter
joule
the rate at which a substance absorbes heat
specific heat
what are the 3 kinds of metric units
meters, liters, kilograms
ratio of mass to volume
density
a unit of mass that is exactly 1/12 the mass of the carbon 12 atom
atomic mass unit
6.02 x 10 23power, number of particles in 1 mole of a pure substance
avagadros #
the total number of protons and neutrons
mass #
the mass in i g. of a mole of an element compound
molar mass
the amount of a substance that contains the smae number of particles as there are atoms
mole
a form of energy the exibits wavelike behavor as it travels through space
electromagnetic radiation
a state at which the atom has a higher potential energy then at its ground state
excited state
the number of waves that pass through a specific point at a given amt. of time
frequency
the state of lowest energy of an atom
ground state
numbers that specify the properties of atomic orbitals and of their electrons
quantum numbers
the elements of group 1 of the periodic table
alkali metals
a negative ion, and how its formed
anion, formed by adding an electron
one half of the distance between the neucli of identical atoms joined in a moleule
atomic radius
a positive ion, how its formed
cation formed by taking away an electron
the energy change that occurs when an electron is accuired by a neutral atom
electron afinity
a measure of the ability of a an atom in a chemical compound to attract electrons
electronegativity
any of the colorful, active, non metalic, elements that are in grop 17
halogens
an atom or group of atoms that has a pos. or neg. charge
ion
the energy required to remove 1 electron from an atom of an element
ionization energy
the 10 subgroups of elements that intervene between group 2 and group 13 begining w/ period 4 (the d block)
transition elements
the electrons able to be lost, gained, or shared, in the formation of chemical compounds
valence electrons
the energy required to break a chemical bond and form neutral atoms
bond energy
the average distance between 2 bonded atoms
bond length
a chemical bond resulting between the sharing of electrons between 2 atoms
diatomic molecule
equal but opposite charges seperated by a short distance
dipole
forces of attraction between polar molecules
dipole-dipole forces
a covalent bond produced by sharing 2 pairs of electrons between 2 atoms
double bond
the simplest unit indicated by the formula of any compound
formula unit
the chemical bond resulting from electrostatic attraction between pos. and neg. ions
ionic bond
chemical compound whose simples formula units are molecules
molecular compound
a chemical bond in which bonding electrons are shared equally by bonding atoms
non-polar covalent bond
chemical compounds formed by gaining, losing, or sharing electrons, 8 electrons
octet rule
a covalent bond reduced by the sharing of one pair of electrons between 2 atoms
single bond
numbers assigned to the atoms in molecules to showthe general distribution of electrons amoung bonded atoms
oxadation numbers