Key words for GCSE Chemistry
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electron |
An electron is part of an atom that has a negative charge. Electrons are found in shells.
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cation |
A cation is an atom or a group of atoms with a positive charge.
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cathode |
A negative electrode is cathode.
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anion |
An anion is an atom or a group of atoms with a negative charge.
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anode |
A positive electrode is an anode.
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reduction |
Reduction is the gain of electrons, the gain of hydrogen, or the loss of oxygen.
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reduced |
A reduced substance has gained electrons.
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oxidation |
Oxidation is the loss of electrons, the loss of hydrogen, or the gain of oxygen.
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oxidised
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An oxidised substance has lost electrons.
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ionic |
A substance with a positive or negative charge is ionic.
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electrolyte |
An electrolyte is a solution (molten or aqueous) that conducts an electrical current.
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molten |
Molten means turned into liquid.
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dissociate |
To dissociate, means to separate.
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aqueous |
Aqueous means dissolved in water.
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electrode |
During electrolysis, positively charged ions move to the negative electrode and negatively charged ions move to the positive electrode.
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electrical |
The flow of a charge around a circuit is called an electrical current.
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current |
The flow of a charge around a circuit is called an electrical current.
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