Front

What is a chemical formula?

Back

A chemical formula is a way of expressing the number and type of atoms in a molecule using symbols and numbers.

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What do subscripts in a chemical formula indicate?

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Subscripts indicate the number of atoms of each element in a molecule.

Front

What do coefficients in a chemical equation represent?

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Coefficients represent the number of molecules or moles of a substance in a chemical reaction.

Front

How many atoms are in the molecule H2O?

Back

There are 3 atoms in H2O (2 hydrogen and 1 oxygen).

Front

What is the total number of atoms in the molecule C6H12O6?

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There are 24 atoms in C6H12O6 (6 carbon, 12 hydrogen, and 6 oxygen).

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What does the term 'element' mean in chemistry?

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An element is a pure substance that cannot be broken down into simpler substances by chemical means.

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How many different elements are in the compound NaCl?

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There are 2 different elements in NaCl (sodium and chlorine).

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What is the significance of the number in front of a chemical formula?

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The number in front of a chemical formula indicates how many molecules of that compound are present.

Front

What is the chemical formula for sulfuric acid?

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The chemical formula for sulfuric acid is H2SO4.

Front

How many elements are in the chemical formula H2SO4?

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There are 3 elements in H2SO4 (hydrogen, sulfur, and oxygen).