The Bronsted-Lowry theory helps us understand acids and bases a little differently.

In this theory:

• Acids are substances that give away protons.
• Bases are substances that take in protons.

This idea can be a bit tricky because it talks about more things compared to the simpler Arrhenius definition.

Here are some challenges with this theory:

1. It's more complicated because substances can act as both acids and bases.
2. It can be hard to see how protons move around in reactions.

But there are ways to make it easier:

1. Try finding real-life examples of acids and bases.
2. Use diagrams to show how protons move in reactions.

This will help you understand the theory better!