1. Equipment Slide 2 printed per student
Change of state diagram for students to label
Green pens

2. Closeness of particles Arrangement of particles
Melting
Evaporating
Freezing
Condensing
Description
Solid to liquid
Closeness of particles
Stay close together
Arrangement of particles
Regular to random
Motion of particles
Start to move around each other

3. - -

5. Retrieval practice Draw the three different states of matter
2) What do the circles represent?
3) Describe the different properties of solids, liquid gases?
4) List some differences between gases and liquids?

6. How many right?

7. Match the word to the picture
TWWL: About the different changes in state SO THAT I CAN…
Describe what happens during changes of state
Explain the different changes of state using scientific language
Interpret melting point and boiling point data
14/11/2018
Match the word to the picture
EXT – Can you think of any other examples of each type?
Recap/Discuss the arrangements of solid, liquids and gases.
Freezing
Condensing
Melting
Evaporating

8. Label your state change diagrams with the correct terms!
Changes of state
Freezing
Melting
Condensing
Evaporating 1 2
Label your state change diagrams with the correct terms! 3 4

9. Changes of state
Freezing
Melting
Condensing
Evaporating 1 2 3 4

10. Changes of state Freezing Condensing Evaporating Melting 2 3 4
What is happening to the particles? HINT: Arranged? Energy?
Bonds? 3 4

11. Changes of state Freezing Condensing Melting Evaporating 3 4
What is happening to the particles? HINT: Arranged? Energy?
Bonds? 3 4

12. Changes of state Condensing Melting Evaporating Freezing 4
What is happening to the particles? HINT: Arranged? Energy?
Bonds?
Freezing 4

13. Changes of state Melting Evaporating Freezing Condensing
What is happening to the particles? HINT: Arranged? Energy?
Bonds?
Freezing
Condensing

14. Changes of state Can a solid change straight to a gas?
Sublimation is changing from a solid to a gas, or a gas to a solid, without becoming a liquid in between due to the change in its internal energy.
Can a solid change straight to a gas?
Can a gas change straight into a solid?
Sublimation
Sublimation

15. Changes of state
Materials are a store of internal energy, due to the motion of particles and the chemical bonds between them.
When a substance is cooled, its internal energy decreases:
the movement of its particles decreases
bonds between particles form when a substance condenses or freezes, or sublimes to form a solid from a gas
When a substance is heated, its internal energy increases:
the movement of its particles increases
bonds between particles break when a substance melts or evaporates, or sublimes to form a gas from a solid

16. Closeness of particles Arrangement of particles
Energy and states
Task: Complete the table to describe the changes in arrangement and energy when a substance changes state.
Melting
Evaporating
Freezing
Condensing
Description
Solid to liquid
Closeness of particles
Stay close together
Arrangement of particles
Regular to random
Motion of particles
Start to move around each other

17. Energy and states PM
Task: Complete the table to describe the changes in arrangement and energy when a substance changes state. Use your labelled diagrams to help you.
Melting
Evaporating
Freezing
Condensing
Description
Solid to liquid
Liquid to gas
Liquid to Solid
Gas to liquid
Closeness of particles
Stay close together
Move away from each other freely and in all directions.
Move towards and get closer together.
Move closer to one another.
Arrangement of particles
Regular to close and no fixed shape.
No pattern. Random movement
Random to regular and fixed shape.
Far apart to close together.
Motion of particles and energy changes.
Start to move around each other and energy increases.
Start to move/vibrate faster so get further apart as bonds break. Energy increases.
Fixed and vibrate on the spot. Energy decreases.
Particles start to vibrate less so get closer together. Energy decreases.

18. Changes of state 15 mins APPLY
Task: Use the particle model to explain what happens when a substances changes state.
Key words:
Particles vibrating
Particles moving
Faster
Solid, liquid, gas
Break bonds
Breaking
Energy
Melting
Boiling
Use diagrams to aid your explanation
15 mins

19. _______________________
Hi I’m Ian the Ice cube. I’m really afraid of heat! I like my particles…
I am now a __________. I have now been m____________.
My particles are now arranged _______________________
_______________________
As Harry Heat continues to
I am now a __________.
I can return to an Ice cube if I go through
Hi, I’m Harry Heat
Hard sheet
Keywords: Melting, Liquid, gain energy, Evaporation, Condensation, Freezing, heat, move, Cooling,

20. ______________________________________________ _______________________
Hi I’m Ian the Ice cube. I’m really afraid of heat! I like my particles being in rows that are fixed and that my particles vibrate really close together.
As Harry Heat warms me up my particles__________________
______________________________________________
I am now a __________. I have now been m____________.
My particles are now arranged _______________________
_______________________
As Harry Heat continues to h_______ me my particles _________________
____________________________________________________________
I am now a __________. The process that has done this to me is_______________. My particles are now arranged___________________
______________________________
I can return to an Ice cube if I go through c____________ and f_______________. These processes are both examples of ____________.
Hi, I’m Harry Heat
Hard sheet
Keywords: Melting, Liquid, gain energy, Evaporation, Condensation, Freezing, heat, move, Cooling,

21. ______________________________________________ _______________________
Hi I’m Ian the Ice cube. I’m really afraid of heat! I like my particles being in rows that are fixed and that my particles vibrate really close together.
As Harry Heat warms me up my particles__________________
______________________________________________
I am now a l__________. I have now been m____________.
My particles are now arranged _______________________
_______________________
As Harry Heat continues to h_______ me my particles _________________
____________________________________________________________
I am now a g__________. The process that has done this to me is_______________. My particles are now arranged___________________
______________________________
I can return to an Ice cube if I go through c____________ and f_______________. These processes are both examples of c____________.
Hi, I’m Harry Heat
EASY sheet
Keywords: Melting, Liquid, gain energy, Evaporation, Condensation, Freezing, heat, move, Cooling,

22. Interpret MP and BP data
APPLY -

23. Use a number line
e.g. bromine MP (Melting point °C ) -7.1 BP (Boiling point °C ) 58.8 What is it a room temperature? Liquid It has melted into a liquid before RT but has not yet boiled into a gas
RT (room temp)
-100
100

24. Interpret MP and BP dataPM
APPLY s g s s s s l s s s s s g s s - g s s s g g s s s s s s

25. Competition Time!
You must become…

26. A particle diagram to show melting.
Competition Time!
A particle diagram to show melting.

27. A particle diagram to show evaporation.
Competition Time!
A particle diagram to show evaporation.

28. A particle diagram to show condensation.
Competition Time!
A particle diagram to show condensation.

29. A particle diagram to show freezing.
Competition Time!
A particle diagram to show freezing.

30. Reflection How do you feel about today’s objectives?
Choose a face and write why you feel this way
(I think I can now _______ because ______________)
Describe what happens during changes of state
Explain the different changes of state using scientific language
Interpret melting point and boiling point data