Chemistry - Isotopes

mass spectroscopy

an instrument that can be used to find the average atomic mass of atoms

isotopes

elements with extra neutrons

SAME atomic number

DIFFERENT atomic mass

Avogadro’s number

super long number that tells you the number of “things” in one mole

grams to moles

divide

moles to grams

multiply

moles to number of particles

multiply

number of particles to moles

divide

protons

positive

neutrons

neutral

electrons

negative

particles found in nucleus

protons and neutrons

electron cloud

region around the nucleus of an atom where electrons might be found

element

substance made of only one type of atom

change in protons leads to

a new element

found between the electrons and the nucleus

empty space

compound

substance made of two or more different atoms

atomic number equals

number of protons

symbol for atomic number

z

number of protons equals

number of electrons

mass number equals

protons + neutrons

amu

atomic mass units