Chemistry Terms Flashcards

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Anion

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A negatively charged ion.

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Anode

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The positive electrode where negatively charged ions lose electrons in oxidation reactions.

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Atom

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The smallest part of an element that can exist, containing a positively charged nucleus surrounded by negatively charged electrons.

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Atomic nucleus

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Positively charged object composed of protons and neutrons at the center of every atom with electrons orbiting it.

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Atomic number

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The number of protons in the nucleus.

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Cathode

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The negative electrode where positively charged ions gain electrons in reduction reactions.

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Cation

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A positively charged ion.

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Chromatography

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A process used to separate substances in a mixture, involving a mobile phase and a stationary phase.

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Compound

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A substance made up of two or more types of atoms chemically combined together.

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Conductor

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A material that contains charged particles free to move to carry electrical or thermal energy.