Topic 10 - Atoms Flashcards
1
Q
what are atoms made up of
A
protons(positive)
nuetrons(nuetral)
electrons(negative)
2
Q
what is the relative mass and charge for a proton, nuetron and electron
A
1 and +1
1 and 0
0.0005 and -1
3
Q
where are protons and nuetrons found
where is an electron found
A
In the nucleus
In the shell
4
Q
what is a ion
A
atoms that have lost or gained electrons
5
Q
how do you work out the number of nuetrons in an atom
A
(atomic number) - (mass number)
