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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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 …

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

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.

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

Prediction I think that …..

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

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

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?

How are you going to show the results?

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

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

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

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