Counting Atoms Tutorial and Practice

What is the first step in counting atoms in a chemical formula?

• Count the total number of atoms

• Identify the coefficients

• List all the elements in the chemical formula

• Balance the chemical equation

The coefficient tells us the number of

• Molecules

• Atoms

• Compounds

• Mixtures

Subscripts tell us the number of...

• Atoms

• Molecules

• Mixtures

• Compounds

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What do subscripts in a chemical formula indicate?

• The position of the element

• The total number of elements

• The number of atoms of the element

• The number of molecules

How do you use coefficients when counting atoms?

• Divide the number of atoms by the coefficient

• Multiply the number of atoms by the coefficient

• Ignore them

• Add them to the subscripts

In the chemical formula H2O, how many hydrogen atoms are there?

• One

• Two

• Three

• Four

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How many Lithium (Li) in Li₂NO₄?

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How many Nitrogen (N) in Li₂NO₄?

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How many Oxygen (O) in Li₂NO₄?

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What is the total atoms in Li₂NO₄?

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