atomic structure Flashcards
1
Q
What is the mass number?
A
It is the largest number, it is how many protons and neutrons there are combined
2
Q
What is the atomic number?
A
how many protons the atoms have
3
Q
how do we know how many electrons there are in an atom?
A
there is the same amount of electrons as protons
4
Q
What charge is an electron?
A
-1
negative charge
5
Q
What charge is a proton?
A
Positive charge
+1
6
Q
What charge is a neutron?
A
Neutral charge
7
Q
What is an isotope?
A
atoms with the same number of protons but different number of neutrons.
8
Q
What is the relative mass of neutrons and protons?
A
1
