Topic 1 - Atomic structure
- Created by: E456
- Created on: 24-03-17 09:42
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ATOMIC STRUCTURE
- The typical size of an atom is in between 10^-9 and 10^-10.
ATOMIC MASS AND ATOMIC NUMBERS
- Mass is the measure of the quantity of a substance present and is measured in grams or kilograms.
- Weight refers to the force exerted on mass.
RELATIVE ATOMIC MASS FORMULA
- Ar= weighted average mass of X atom / 1/12massof 12C
- The number of protons in the atomic nucleus is known as the atomic number of the atom, and this determines what type of atom it is.
- The number of neutrons may vary from one atom to another.
- Oxygen has a mass number, or nucleon number, of 16.
- Atoms of the same atomic…
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