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9 Chemistry
the Periodic table
Term | Definition |
---|---|
Atomic Number | The number of protons in an atom |
Electrons | The negative sub atomic particles that orbit the nucleus |
Protons | The positive sub atomic particles that are located in the nucleus. |
Neutrons | The neutral sub atomic particles that are located in the nucleus. |
Metals | Located to the left of the periodic table and have similar properties including conducting electricity & heat. |
Non Metals | Located to the right of the periodic table and have similar properties including non conducting electricity and heat and they are softer. |
The Noble Gases | Are found in Group 8 in the periodic table and they have a full outer shell of electrons/ |
Atomic Mass | The mass of the number of neutrons and protons in a nucleus of an atom |
Group | Groups are the vertical columns in the periodic table |
Period | Periods are the horizontal rows in the periodic table vertical columns in the periodic table |
Electron Energy Level | Electron shells, 2, 8, 8, |