Chem Midterm Flashcards
nuclear where 2 protons and 2 neutrons are released
alpha
nuclear decay with highest ionizing effect
alpha
nuclear decay with no mass and no charge
gamma
decay emitting an electron
beta
nuclear decay giving off a helium nucleus
alpha
most penetrating nuclear decay
Gamma
decay where a neutron changes to a proton
Beta
The nuclear reaction that releases the most energy
fusion
the nuclear reaction where only a small particle is released
decay
the nuclear reaction where two nuclei are combined
fusion
the nuclear reaction where a nucleous splits fairly even
fission
protons =
electrons
atomic mass - protons =
neutrons
which subatomic particle is responsible for creating an ion
electrons
which subatomic particle determines the element
protons
in order to form a cation, an atom must
lose electrons
An electron is excited when energy is absorbed
True
an electron is in its ground state after energy is absorbed
false
the atom became an ion when it absorbed energy
false
The shotest wavelength =
highest energy
Steps of why color is added to the flame
red- electrons absorb the energy
yellow- electron is excited to a higher enrgy state
green- electron releases energy and drops to a lower energy
blue- if the photon of energy has a wavelength in the visible part of the spectrum then it is visible to our eyes
atomic size
the size of the atom - it increases down and to the left
ionization energy
the energy needed to remove an electron - it increases up and to the right
electronegativity
the pull of electrons toward the nucleus bond - it increases up and to the right
ionic size
the size of the atom - it increases down and to the left
non metal + non metal =
covalent
non metal + metal =
ionic
metal + metal
metallic
< 0.4
non-polar covalent
0.4 - 2.0
polar covalent
> =2.0
ionic
when doing electron negativity the number is never…
Negative
LDF
Non polar
dipole - dipole and hydrogen bonding
Polar
intramolecular force
within a molecule
intermolecular force
between a molecule
LDF. 2
weakest intermolecular force
Hydrogen bonding
strongest intermolecular force
Solute
substance being dissolved
solvent
dissolving medium (Substance doing the dissolving)
solution
Homogeneuous mixture
electrolyte
substance that conducts electricity in water
