Boiling Point Lab #1

Boiling Point Lab 1

BP Lab#1 data recording sheet(You need to download this and can record your data observed as well as your temperatures at different times onto this sheet. As well, the questions that are listed below are on the sheet and so you may answer them directly onto your downloaded sheet after the lab.)

After completing the lab, use the information that you gathered to do the following:

  1. Create a new blog post titled: Boiling Point Lab #1 and categorize under Properties of Matter
  2. Answer the following questions on your blog post:
  • At what temperature did you predict the ice would completely melt?
  • At what temperature did you predict the water would boil?
  • Using the graph that shows the changing states of water, answer the following question:

 

  1. What usually happens to the temperature of a substance when heat is added? Support your answer with data from the graph.
  • Notice that there are two sections on the graph where heat is being added bit the temperature of the water does not change. Why? What is happening to the water molecules at these two stages? Support your answer with data from the lab experiment.
  • As the temperature of water increases, what happens to the energy of the water molecules?
  • As the temperature of the water increases, what happens to the spaces between the water molecules? Use particle theory to explain what you observed. You might start your sentences with ” During my observations I noticed …….. this happened because in particle theory………….”
  • Write 5 questions that you thought of during the lab. For example: “What made the bubbles?”

Read and Summarize the paragraph below in your own words:
The molecules in solids “stick together”. This attraction between molecules gives solids their definite shape and volume. When a solid is heated, some of the attractive forces between the solid molecules are weakened. When the solid is melted and in the liquid state, the molecules can slide over and around each other. The molecules in a liquid no longer maintain a definite shape, but because some forces of attraction still exist between the molecules, liquids still have a definite volume. When a liquid is heated, the molecules gain more energy. This energy enables the molecules to overcome the attractive forces. A gas, therefore, has no definite shape or volume.

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