PS Chapter 17 Flashcards
atom
smallest piece of an element
nucleus
very tiny, very dense center of an atom
proton
positively charged particle that makes up atoms
electron
negatively charged particle that makes up atoms
neutron
neutral particle that makes up atoms
quarks
particles that make up protons and neutrons
electron cloud
area surrounding the nucleus where the electrons are located
smallest piece of an element
atom
very tiny, very dense center of an atom
nucleus
positively charged particle that makes up atoms
protons
negatively charged particle that makes up atoms
electrons
neutral particle that makes up atoms
neutrons
particles that make up protons and neutrons
quarks
area with electrons that surrounds the nucleus
electron cloud
atomic number
number of protons in an atom
mass number
mass of a single atom which is equal to the protons plus the neutrons
isotopes
atoms of the same element with different mass numbers
average atomic mass
weighted average of the masses of all of the isotopes of an element
number of protons in an atom
atomic number
mass of a single atom which is equal to the protons plus the neutrons
mass number
atoms of the same element with different mass numbers
isotopes
weighted average of the masses of all of the isotopes of an element
average atomic mass
periodic table
table of all known elements in order of increasing atomic number
group
a column on the periodic table
period
a row on the periodic table
table of all known elements in order of increasing atomic number
periodic table
a column on the periodic table
group
a row on the periodic table
period
