How Atoms Differ

Question 1

Composition of an Atom?

Answer 1

Protons: Positively Charged, Found in the Nucleus, Mass: 1 AMU
Neutrons: No Charge, Found in Nucleus, Mass: 1 AMU
Electrons: Negatively Charged, Found out of Nucleus, Mass: 1/1840 AMU

Question 2

Atomic Number, Atomic Mass, Mass Number?

Answer 2

Atomic Number: Number of Protons; Each element has a distinct number of Protons
Atomic Mass: Average total mass of an Isotope
Mass Number: Number of Protons & Neutrons

Question 3

How does the Atomic Number help identify an Element?

Answer 3

Each element has a distinct number of Protons on the Periodic Table