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11 Cards in this Set
- Front
- Back
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Periodic Tables |
John Newland Dmitri Mendeleev Modern Periodic Table |
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John Newland |
Law of octaves atomic mass no spaces were left |
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Dmitri Mendeleev |
Atomic mass spaces were filled chemical and physical properties were grouped together in physical rows |
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Moderen Periodic Table |
Atomic Number Spaces were filled Noble gases |
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Trends in group 1 and 7 |
Group 1- Increases down Group 7- decreases down |
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Semi-Metal |
Silicon |
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What is the atomic and mass no.? 12 C 6 |
12 is mass 6 is atomic |
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How do you find the atomic and mass no.? |
Atomic= protons Mass= protons + neutrons |
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Name Groups 1,2,7,0 |
1- Alkali 2- Alkaline Earth Metals 7- Halogens 0- Noble |
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metal + water= |
metal hydroxide+ hydrogen |
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What does diatomic mean? |
two atoms covalently joined together e.g. carbon dioxide |
