Part 1
No description yet. This curated deck is ready for daily study.
Card preview (19)
what charge do protons carry?
positive
what charge do neutrons carry?
neutral
what charge to electrons carry?
negative
what are valence electrons?
the electrons farthest from the nucleus
what is the smallest unit of a chemical element?
atom
what subatomic particles are atoms composed of?
protons, neutrons and electrons
what subatomic particles form the nucleus of an atom?
protons and neutrons
where do electrons exist?
outside the nucleus in orbitals
atomic number = ?
atomic number = number of protons
mass number = ?
mass number = number of protons + neutrons
in a neutral atom the number of protons = ?
NAME?
what is an ion?
results due to loss or gain of electrons (when an atom has a positive or negative charge)
what is atomic weight?
common convention used to define the mass of an atom
what is an isotope? **
same number of protons (atomic number) different number of neutrons (different mass number)
what is ionization energy?
energy required to remove an electron completely away from a gaseous atom or ion
what is electron affinity?
the energy change that occurs when an electron is added to a gaseous atom.
what does electron affinity represent?
the ease with which an atom can accept an electron
do alkaline earth metals have high or low electron affinity?
low
do halogens have high or low electron affinity?
high- because they just need one more electron to have an octet