24-25 Unit 8 lesson 4: Lab recap and quiz review

Lab conclusion

• What happened in the lab?

• Use YOUR COPY of the class data and the instructions on page 191 to complete your graph (you can graph it on paper or in sheets).
Upload a picture of your graph to GC
Complete conclusion questions, finish for HW

You will prepare a graph from your data that includes the following information:
1. Label the x-axis with the time (in minutes). Label the y-axis as temperature (in degrees Celsius).
2. Plot your points using your recorded data.
3. Label the 5 areas on your graph: solid (S), liquid (L), gas (G), freezing point/melting point FP/MP and condensation/boiling point (CP/BP).
4. Don't forget a title!

5.What should your graph look like?

• There will be a lab quiz tomorrow- you may use pages 189-193

Lab conclusion

• What happened to the temperature as heat was added to the ice?

• What happened to the temperature as heat was added to the water?

• What happened to the temperature as the water was boiling?

• what is happening to the water molecules in the flat areas of the line on your graph during the phase changes from solid to liquid and liquid to gas?

• When the ice is melting is it releasing heat or absorbing heat?

• If you put the liquid water into the freezer and recorded its temperature as it refroze, would it be absorbing heat or releasing heat?
  
  

​What should your graph look like?

Calculate the energy required to convert 50 g of ice at 0°C to steam at 100°C. (Hint: Account for melting, heating, and vaporization.)

​What should your graph look like?

​Finish lab graph
Finish worksheet