Chemical Formulas and Names

Front

What is a chemical formula?

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A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound or molecule.

Front

What is the significance of subscripts in a chemical formula?

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Subscripts indicate the number of atoms of each element in a compound. For example, in H2O, the '2' indicates there are two hydrogen atoms.

Front

What is the correct formula for calcium carbide?

Back

CaC2

Front

What is the correct name for the compound NO2?

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Nitrogen dioxide

Front

What is the correct name for the compound LiF?

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Lithium fluoride

Front

What is the formula for tribromine tetraoxide?

Back

Br3O4

Front

What are Greek prefixes used for in chemical nomenclature?

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Greek prefixes are used to indicate the number of atoms of each element in a compound, especially when naming covalent compounds.

Front

What is the correct name for CO?

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Carbon monoxide

Front

What is the difference between ionic and covalent compounds?

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Ionic compounds are formed from the electrostatic attraction between oppositely charged ions, while covalent compounds are formed by the sharing of electrons between nonmetals.

Front

What is the formula for sulfur trioxide?

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SO3