1. How does this work?
What key words will we need to answer this?
Clip

2. temperature dissipated equilibrium flow energy
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Hot coffee
Ice cold milkshake
Using as many of the words below as you can, write a paragraph to describe what will happen to each drink over a period of time.
cooler hotter thermal
temperature dissipated
equilibrium flow energy

3. Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Energy Flow
Thermal (heat) energy always flows from a hotter area to a cooler one.
Therefore, thermal energy will flow into the cold drink from its warmer surroundings, while thermal energy will be dissipated from the hot water to the cooler surroundings.
Eventually, both drinks will reach room temperature. At this point there will be no flow of thermal energy, because there is no temperature difference. Therefore, we can say that the system ( the drinks, containers, table and surrounding air) is in thermal equilibrium.
Ask can they think of any uses for this knowledge

4. Describe the changes of states
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.

5. States of Matter Solid Gas Liquid Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
States of Matter
Gas
Solid
Liquid

6. States of Matter Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
States of Matter
Solid
Liquid
Gas
e.g. ________
e.g. ___________
Have a f_______ shape, do not flow
Can flow and take the s______ of container
_____ the container they are put in
Difficult to c_________
Easy to c________
P________ close together and f______ in place.
Particles close together but can m______ around
Particles _____ to move in any and all directions

7. Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Kinetic Theory
Whether a substance is a solid, liquid or gas is based on how the particles within are arranged.
The idea that all things are made up of tiny vibrating atoms and molecules is called kinetic theory.
Solid
Liquid
Gas

8. States of Matter Solid Gas Liquid
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
States of Matter
Gas
Solid
Liquid
All substances can be described using the kinetic model which uses states of matter.
Some substances fit a mixture of states – e.g. smoke is a gas with solid particles held within it. These substances are known as emulsions.
All substances have the ability to move between these states. How can they do this?

9. States of Matter Solid Gas Liquid
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
States of Matter
Gas
Liquid
Solid
Particles in a solid are the least energetic, liquids slightly more energetic and gases have the most energy.

10. Temperature Solid at high temp Solid at low temp Solid at low temp
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Temperature
Temperature is a measure of the average kinetic energy of particles (measured in degrees Celsius). The faster they are moving the higher the temperature will be.
In a solid particles cannot move around, so what do they do when they got hot?
Solid at low temp
Solid at low temp
Solid at high temp

11. What happens to the Eiffel Tower in Summer?
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
What happens to the Eiffel Tower in Summer?

12. Expansion and Contraction
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Expansion and Contraction
All materials expand as they become warm because the particles gain extra kinetic (vibration) energy.
This extra energy means they push harder against the container and cause it to expand.
In a solid this change in very small but in gases it can be noticeable to the eye.
Gas at low temp
Gas at high temp

13. Use the idea of kinetic theory to explain how a thermometer works?
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Use the idea of kinetic theory to explain how a thermometer works?
Write your answer using as many of these key words;

14. Use the idea of kinetic theory to explain how a thermometer works?
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Use the idea of kinetic theory to explain how a thermometer works?

15. Temperature (degrees C)
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Cooling Curve
Sketch the shape you would expect to see for the temperature of a hot cup of coffee over one hour.
Temperature (degrees C)
Time (minutes)

16. Heat The standard international (SI) unit of energy is Joules (J)
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Heat
A direct measurement of how much energy all particles have. Add up their energies rather than finding an average.
The standard international (SI) unit of energy is
Joules (J)

17. A swimming pool of water
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Heat... OR
Temperature...
Which of the following has the most heat, and which has the least heat?
An ice lolly
A swimming pool of water
Your body
A boiling kettle
A radiator
The body of an elephant
An iceberg

18. Explain why spilt coffee cools down faster then when it is in a mug?
Learning Objectives
By the end of this lesson you should be able to…
Explain the differences between solids, liquids and gases in terms of kinetic theory.
Describe the changes of states
Explain contraction and expansion of materials when heated or cooled.
Explain why spilt coffee cools down faster then when it is in a mug?
Explain why large ears help elephants lose heat fast?