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16 Cards in this Set
- Front
- Back
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What does the nucleus contain? |
It contains protons and neutrons.
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What charge does have a nucleus have? |
It has a positive charge. |
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What do electrons do+ what charge do they have? |
It has a positive charge + they have a negative charge. |
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What flame does lithium produce when heated? |
It produces a red flame. |
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What colour flame does sodium produce when heated? |
It produces a yellow/orange flame. |
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What colour does potassium produce when heated? |
It produces a lilac flame. |
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What elements have been identified by the line spectrum? |
Caesium, rubidium and helium were identified by the line spectrum. |
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What did Döbreiner do? |
He put the elements into groups of 3 which he called traids. |
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What did Newland create? |
He created a Law of Octaves in which meant he arranged the elements in order of relative atomic mass. |
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What did Demitri Mendelev do? |
He left gaps and predicted new elements in the periodic table? |
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What does the periodic table do? |
The periodic table put elements with similar properties together. |
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What are the electron shell rules? |
They always occupy the shells, The lowest energy level is always filled first, The arrangement is 2,8,8, An elements electron arrangement determines the chemical properties. |
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What happens when ions lose or gain electrons? |
They form charged particles called ions. |
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What are ions made from? |
They can be made from single atoms or groups of Atoms. |
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What happens in ionic bonding? |
Ionic bonding is when elections are transferred, as opposite charged ions are strongly attracted to each other. They like to stick to it and form an ionic bond. |
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What do ionic compounds do? |
They form a regular lattice. |
