1. New Topic P4 Simple kinetic molecular model of matter

2. This lesson State the distinguishing properties of solids, liquids and gases. Describe qualitatively the molecular structure of solids, liquids and gases. Interpret the temperature of a gas in terms of the motion of its molecules. Relate the properties of solids, liquids and gases to the forces and distances between molecules and to the motion of the molecules.

3. Stand up!

4. Draw the sentence 1.2.3.4. 5.6.7.8.

5. Draw these sentences! 1.The particles in a solid are close packed, in regular positions and vibrate around a fixed point. 2.The particles in a liquid are also close packed, they vibrate but can also move around randomly. 3.Particles in a liquid are NOT further apart than particles in a solid. 4.The particles in a gas are far apart and move randomly. 5.The particles in a gas are about 10 times further apart than in a solid or liquid 6.The hotter a gas is, the faster the particles move. 7.The particles in a solid, liquid or gas are the same size (provided it is the same substance) 8.Physics is the most interesting subject..

6. Draw these sentences! 1.The particles in a solid are close packed, in regular positions and vibrate around a fixed point. 2.The particles in a liquid are also close packed, they vibrate but can also move around randomly. 3.Particles in a liquid are NOT further apart than particles in a solid. 4.The particles in a gas are far apart and move randomly. 5.The particles in a gas are about 10 times further apart than in a solid or liquid 6.The hotter a gas is, the faster the particles move. 7.The particles in a solid, liquid or gas are the same size (provided it is the same substance) 8.Physics is the most interesting subject..

7. Due next Thursday - Finish “Draw the sentence” Homework

8. How do we know?

9. Brownian motion

10. Brownian motion – Fat droplets in milk Brownian Motion - YouTube

11. Brownian motion is the seemingly random movement of particles suspended in a fluid (i.e. a liquid or gas). It is due to the instantaneous imbalance in the combined forces exerted by collisions of the particle with the much smaller liquid molecules surrounding it.

12. Solids, liquids and gases Let’s try a simulation!

13. Properties of solids, liquids and gases Make notes of the following slides if you wish!

14. Solids Fixed shape Cannot flow Difficult to compress Generally dense

15. Liquids Shape can change Can flow Not easy to compress Generally dense

16. Gases Shape can change Can flow Easy to compress Low density