Atoms & Atomic Structure Flashcards
the scientific study of the properties & behavior of matter
chemistry
the smallest unit of matter that retains the physical & chemical properties of an element & is made up of subatomic particles
atom
anything that takes up space & has mass
matter
the quantity of matter in an object; a measure of inertia of a body
mass
how strongly an object is pulled by gravity; proportional to mass
weight
a type of matter composed of only 1 kind of atom; cannot be broken down
element
the number of protons in an atom of a particular element
atomic number
the number of protons & neutrons in an atom
mass number
the average mass for a naturally occurring element, expressed in Daltons
atomic mass
3D space where an electron will most likely be found
electron orbital
electrons on the outermost shell of an atom
valence electrons
outermost shell of an atom
valence shell