ISOTOPES & IONS Flashcards
1
Q
atomic number:
A
the number of protons (+) in a nucleus
2
Q
mass number:
A
the combined number of protons (+) and neutrons (-)
3
Q
isotopes:
A
atoms with the same atomic number but different mass number
-they are named by the element name
4
Q
When is an atom neutral?
A
-it is neutral when it has equal numbers of protons and electrons
5
Q
ion:
A
an atom with unequal numbers of protons and electrons
6
Q
sodium atom:
A
an atom that looses electrons
7
Q
cation:
A
positively charged ions
8
Q
anion:
A
negatively charged ions
9
Q
isotope notation:
A
also known as nuclear notation, it allows us to use a visual symbol to easily determine an isotope’s mass number, atomic number, and the number of neutrons and protons in the nucleus without having to use a lot of words
