Changes in pressure can make it tricky to understand melting and freezing points.

1. How Pressure Affects Things:

• When pressure goes up, the melting point of solid materials can rise.
• On the other hand, higher pressure may lower the freezing point of liquids.

2. Why It’s Hard to Predict:

• Figuring out how these changes happen can be tough because it depends on the specific material.
• Setting up experiments in school can be tricky because everything needs to be just right.

3. Ways to Help Understand:

• Using phase diagrams can make it easier to see these changes.
• Doing controlled experiments lets students see how pressure affects melting and freezing for themselves.