Counting Atoms and Balancing Equations Quiz

What is the role of a coefficient in a chemical equation?

• It is used to balance the charges in a reaction.

• It represents the charge of an ion.

• It shows the number of atoms in a molecule.

• It indicates the number of molecules or moles of a compound.

In the chemical formula C6H12O6, how many hydrogen atoms are present?

• 24

• 18

• 12

• 6

How many oxygen atoms are there in the compound Na3(PO4)2?

• 4

• 8

• 6

• 2

What should you do when a group of atoms is placed in a bracket in a chemical formula?

• Ignore the bracket and count the atoms as usual.

• Multiply the atoms inside the bracket by the subscript outside the bracket.

• Divide the number of atoms inside the bracket by the subscript outside.

• Add the subscript outside the bracket to each atom inside.

Where can you find additional practice materials for counting atoms?

• In the comments section of the video.

• By subscribing to the channel.

• On the website www.van.com.

• In the video description.