1. Warm up: what would be the theoretical temperature after mixing 50 mL of 70°C water with 30 mL of 10°C water? Activity 62: Quantifying Energy

2. Reminder that I am doing a notebook check on Friday. Make a page called “Notebook Score.” Notebook Check

3. In-class test review and project work date: ◦ Wednesday, February 3 rd Unit D Test and project work date: ◦ Friday, February 5 th Unit D Final Project due: ◦ Tuesday, February 9 th Unit D Project: Examples and Choice Sheet

4. Activity 61 Analysis Questions

5. Activity 61 In Case You Missed It… Particles with higher temperatures have greater amount of thermal energy, causing them to move at a higher speed. ◦ By colliding with molecules with less thermal energy and at a lower speed, hotter particles transfer some thermal energy to the slow moving particles.

6. Please open your books to page D50. Activity 62: Quantifying Energy

7. When comparing a cup of ice and a cup of tap water: ◦ What has a greater temperature? ◦ What has more heat energy? When comparing a small cup of tap water and a large cup of tap water: ◦ What has a greater temperature? ◦ What has more heat energy? Activity 62: Quantifying Energy

8. Focus : how much energy does it take to melt an ice cube? With your group, brainstorm ways to measure the amount of energy it takes to melt an ice cube. Activity 62: Quantifying Energy

9. Procedure: ◦ Using the information in the procedure, create a chart that you can use for data when recording the ice cube melting in 50 mL of hot water, 100 mL of hot water, 50 mL of cold water, and 100 mL cold water Activity 62: Quantifying Energy

10. Amount of Water Initial Temp of Water Final Temp of Water Energy Released Activity 62: Quantifying Energy

11. What released more energy, hot or cold water? 50 mL or 100 mL? What would be the energy released if you had a 30 gram ice cube and 50 mL of water? Activity 62: Quantifying Energy

12. Unit D Topic Conference

13. Start thinking about your Unit D Project. ◦ Work day on Wednesday! Activity 62 analysis questions. Notebook check on Friday! Tonight’s Homework