3.1 what is an atom made up of Flashcards
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