Show:
Location
Charge and Mass
Mass and Atomic Number
Isotopes
Average Atomic Mass
100
Where are protons located?
Inside the nucleus
100
What is the mass of a proton?
1 amu
100
What is mass number?
the sum of nucleons
100
What are isotopes?
Isotopes are varieties of the same atom with a different amount of neutrons
100
Define the average atomic mass
is the weighted average of all the naturally occurring isotopes of an element
200
Where are electrons located?
outside the nucleus
200
What is the exact mass of an electron?
1/1837 amu
200
what is the formula used to find mass number?
Protons + Neutrons = Mass Number
200
Are the number of protons altered in an isotopes?
No, the number of protons remains the same
200
What is the formula of average atomic mass
(mass of isotope)(abundance) + (mass of isotope)(abundance) + ...
300
where are neutrons located?
Inside the nucleus
300
What is the charge on electrons?
Negative
300
What is the Atomic Number equal to?
The number of protons
300
How many neutrons are there in Na-30?
17 neutrons
300
What form must abundance be in to calculate the average atomic mass?
Decimal
400
what are the nucleons?
protons and neutrons
400
What is the charge on protons?
Positive
400
What is the Mass number of oxygen
16
400
how many protons are there in O-87
8 protons
400
Find the average atomic mass: 50% Au-197 ,50% Au-198
197.5 amu
500
Are electrons ever in the nucleus?
No
500
Neutrons have what kind of charge?
They have no charge, they are neutral
500
What is the atomic number of sodium?
11
500
How many neutrons are there in O-87?
79 Neutrons
500
What is the unit that is used for average atomic mass?
amu