3.1 what is an atom made up of Flashcards
(9 cards)
atom
the smallest particle that can still have chemical characteristics of an element
types of subatomic particles
proton
neutron
electron
proton
-found inside nucleus
-carries a positive electrical charge
neutron
-found inside nucleus between proton
-neutral particle with no net electrical charge
electron
-found in the electron shell
-extremely tiny particles that move very quickly
-carries a negative electrical charge
number of protons in an atom=
number of electrons in the atom
characteristics of proton
-relative mass: 1
-relative charge: +1
-location in atom: nucleus
characteristics of neutron
-relative mass: 1
-relative charge: 0
-location in atom: nucleus
characteristics of electron
relative mass: 1/1840
relative charge: -1
location in atom: electron shell