1. Thermic processes in nature
 WALT –
Explore and explain the idea of endothermic processes and exothermic reactions in nature

2. Respiration What is respiration? What is the equation for respiration
Is respiration an endo or exothermic reaction? Explain why you think this

3. Respiration What is respiration?
- The release of energy from food (glucose)
What is the equation for respiration
Is respiration an endo or exothermic reaction? Explain why you think this

4. Respiration What is respiration?
- The release of energy from food (glucose)
What is the equation for respiration
- Glucose + Oxygen = CO2 + H2O + Energy
Is respiration an endo or exothermic reaction? Explain why you think this

5. Respiration What is respiration?
- The release of energy from food (glucose)
What is the equation for respiration
- Glucose + Oxygen = CO2 + H2O + Energy
Is respiration an endo or exothermic reaction? Explain why you think this

6. Respiration
can be reviewed to identify it as an exothermic reaction, suggest getting hot when running.
Bonds are made and heat is released

7. Photosynthesis What is Photosynthesis?
What is the equation for Photosynthesis
Is Photosynthesis an endo or exothermic reaction? Explain why you think this

8. Photosynthesis What is Photosynthesis?
- The process by which plants produce energy using energy from the sun
What is the equation for Photosynthesis
Is Photosynthesis an endo or exothermic reaction? Explain why you think this

9. Photosynthesis What is Photosynthesis?
- The process by which plants produce energy using energy from the sun
What is the equation for Photosynthesis
- Water + Carbon Dioxide →Glucose + Oxygen
Is Photosynthesis an endo or exothermic reaction? Explain why you think this

10. Photosynthesis What is Photosynthesis?
- The process by which plants produce energy using energy from the sun
What is the equation for Photosynthesis
- Water + Carbon Dioxide →Glucose + Oxygen
Is Photosynthesis an endo or exothermic reaction? Explain why you think this
- an endothermic reaction that converts carbon dioxide and water into glucose and oxygen.
It takes in heat and breaks bonds

11. Photosynthesis
can be reviewed as an endothermic reaction that converts carbon dioxide and water into glucose and oxygen.
Answer Qs 22 and 23, pg 143

12. Respiration can be represented by the word equation
glucose + oxygen →carbon dioxide +water.
Photosynthesis can be represented by the word equation
carbon dioxide + water →glucose + oxygen.

13. Investigating endo and exothermic reactions
WALT - Explain what type of processes melting and evaporation are WILF – Design experiment Complete experiment

14. Are melting ice and evaporation exo or endothermic reactions?
When ice melts…
When water evaporates …

15. endothermic processes.
When ice melts heat is taken in from the surroundings and physical bonds are broken
Explain how water evaporates using the example above
When water evaporates …

16. endothermic processes.
When ice melts heat is taken in from the surroundings and physical bonds are broken
Explain how water evaporates using the example above
When water evaporates …heat is taken in and bonds are also broken

17. Design an experiment to …
Investigate which conditions increase the rate of evaporation using tissues or small pieces of cloth, dampened.
Factors which can be tested
temperature and
moving air.

18. Which conditions aid the rate of evaporation?
Write in your books :
Conditions that increase the rate of evaporation …
temperature and
moving air.

19. Prediction
I think that …..

20. Prediction I think that …..
The higher the temperature of the cloth, the faster the rate of evaporation
The faster the speed of the wind the faster the rate of evaporation

21. You will be given the apparatus below
2 pieces of cloth
Measuring cylinder
Water
Stop watch
Thermometer

22. Method - How are you going to measure the effects of Temperature on evaporation?
Write some ideas in your books
What are you going to change?
What are you going to keep the same?

23. How are you going to show the results?

24. How are you going to show the results?
Table
Design your table

25. Results Room Temperature (20C) Outside Temperature (24C)
Time taken for water to evaporate

26. Conclusion What was the best temperature for evaporation?
Why? Give a particle explanation of the process.

27. Evaluation What was good about your experiement? What went wrong?
What would you change and keep the same if you to repeat the experiment?