atomic structure Flashcards
definitions
1
Q
atomic number
A
the atomic number is the number of protons in the nucleus of an atom
2
Q
mass number
A
the mass number is the total number of protons and neutrons in the nucleus of an atom
3
Q
isotopes
A
isotopes are atoms which have the same number of protons but they have a different number of neutrons so they have a different mass number
4
Q
cation
A
a cation is a positive ion
5
Q
anion
A
an anion is a negative ion
6
Q
compound
A
a compound is a substance formed when two or more elements are chemically combined
