4.1 Cards Flashcards
1
Q
what are atoms
A
the building blocks of matter
2
Q
what are atoms made up of
A
protons neutrons and electrons
3
Q
what does the proton determine
A
the atoms identity/what element is is
4
Q
what do neutrons do
A
the hold the nucleus together
5
Q
what do the electrons do
A
the determine reactivity
6
Q
what is the mass of protons/neutrons
A
about 1 amu
heavy
7
Q
what is the mass of electrons
A
almost 0
very little
8
Q
what is an isotope
A
the same element with a different mass/ different number of neutron
