Periodic Table and atoms Flashcards
1
Q
what does an atom have
A
nucleus- protons and neutron and electron that orbit the nucleus
2
Q
what are the charges on proton neutron and electron
A
pro. = +
neu. = neutral
elec. = -
3
Q
what does mass no. tell us
A
protons and neutron
4
Q
what do you do find electrons
A
take the atomic no. away from the mass no.
5
Q
what are isotopes
A
is atoms with the same atomic no. but different mass no.
6
Q
what is nuclide notation used to show
A
atomic no. , mass no.of atoms
which show how much pro. neu. ele. there are
