Atoms and elements Flashcards
1
Q
what charge do protons have?
A
positive
2
Q
what charge do neutrons have?
A
no charge
3
Q
what charge does the nucleus have?
A
positive
4
Q
what charge do electrons have?
A
negative
5
Q
what is the overall charge of an atom?
A
neutral
6
Q
the charge on the electrons is
A
the same size as the charge on the protons (but opposite)
7
Q
the number of protons is equal to
A
the number of electrons in an atom
8
Q
what happens if some electrons are added or removed?
A
the atom becomes charged and is an ion
9
Q
what is an element?
A
when a substance contains only one type of atom
