How To Balance Chemical Equations (5 Steps)

What is the only element that can be changed to balance a chemical equation?

• Element symbols

• Atomic numbers

• Coefficients

• Subscripts

What is assumed when no coefficient is written in front of a chemical formula?

• It's undefined

• It's 2

• It's 1

• It's 0

How can you balance an equation with an element that has a different number of atoms on each side?

• It cannot be balanced

• Add more elements

• Change the coefficients

• Change the subscripts

When balancing equations, if a chemical element appears as a polyatomic ion on both sides, how should it be treated?

• As a single unit

• As separate ions

• By balancing each atom individually

• Ignoring its presence

What is the final step in balancing a chemical equation as discussed in the video?

• Counting the atoms again

• Changing the subscripts

• Practicing with more equations

• Checking the coefficients

1. 1. What is the Law of conservation of Matter described in the Video ?

And

2. Why is it the law is so important to understand how chemical equations work ?

Tags

NGSS.HS-PS1-7