atoms / ions Flashcards
atom
smallest amount of an element
all atoms of an element have the same
chemical properties
you cannot destroy or create
atoms
everything is made up of
atoms
what makes up an atom
electrons protons and neurons
protons have a _____ charge
positive charge
where are protons in a atom
the center / the nucleus
neurons have a ____ charge
neutral
where are neurons in the atom
inside nucleus
electrons have a ____ charge
negative charge
where are electrons in an atom
electron cloud, outside nucleus
number of protons = number of electrons in a _____
neutral atom
elements
substance that cannot be broken down
the number of protons = atomic number in a ___
element
mass number
total number of protons and neutrons
gluons
hold quarks together
mesons
particles made of one quark and one antiquark
quark
particles that make up protons and neutrons
the number of ____ is constant in any element
protons
number of ______ can vary without changing element
electrons and neutrons
isotope
form ofelement that has an abnormal number of neutrons or mass
radioactive element
element with unstable amount of neutrons
atomic mass
amount of matter in an atom of an element
weighted average
average atomic mass of specific element
atoms have a ____ charge
neutral charge
ion
atom that has lost or gained electrons
when an atom loses electrons, it becomes
positive (cation)
when an atom gains electrons it becomes ______
negative (anion)
