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Success Criteria - Chap 7.pdfBrownian Motion
Brownian Motion
Test Yourself:
1. What does Brownian motion refer to?
2. What happens when you raise the temperature?
Arrangement & Movement of Particles
Arrangement & Movement of Particles
Tip:
Pay attention to all the keywords.
Differentiate between "Arrangement" and "Movement".
Explaining Heating and Cooling / Changes of State
Explaining Heating and Cooling / Changes of State
Tip:
When heated, particles gain kinetic energy and move further away from one another.
When cooled, particles loose kinetic energy and move closer towards one another.
During changes of state, the distance between particles changes, but their size and mass do not change!
Heating & Cooling Curves
Heating & Cooling Curves
Tip:
Learn to analyse such temperature-time graphs to answer questions such as:
What is the melting point? What is the boiling point?
How do you describe the arrangement of particles at A, C and E?
How do you describe the movement of particles at A, C and E?
What is happening to particles during melting or boiling?
(Hint: Particles gain energy --> They overcome the intermolecular forces of attraction between them --> They move further away from one another)
What is Diffusion?
What is Diffusion?
- https://www.sciencefacts.net/diffusion.html
- Free Animation Education
Test Yourself:
1. How do you define the term diffusion?
2. What other everyday examples of diffusion can you think of?
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