Measuring and recording

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Edit   Delete - Last Modified By: rdu at 9/02/2015 3:27:07 PM

Class discussion questions:

At what temperature does pure water boil at sea level?

What precautions must you take when using a thermometer to be sure your readings are accurate?

What is a line graph?

Which is the x-axis of a graph and which is the y-axis?

What is an easy way to remember which axis is which?

Edit   Delete - Last Modified By: rdu at 9/02/2015 3:29:16 PM

The class activity below can be conducted at home, however you will need to use a saucepan on the stove and use a thermometre that can reach 100 degrees Celsius.  You will know when water is boiling when there are many rolling bubbles rising to the surface.

Edit   Delete - Last Modified By: rdu at 9/02/2015 3:30:29 PM

Can be done prior to class or afterwards:

Can you alter the boiling point of water?  Conduct some research to find out what factors can be changed.

Edit   Delete - Last Modified By: FBA at 15/02/2016 9:23:07 AM

Complete the experiment outlined in the link below.

Note: When writing your practical report, you will need graph paper.

 

Here are the discussion questions:

DISCUSSION QUESTIONS:

  • Describe how the temperature of the water changed over time.
  • How do your results compare with other students?
  • Use your graph to estimate the temperature of the water 4 and a half minutes after you started heating.
  • Predict the temperature that the water would have reached after 11 minutes of heating.
Edit   Delete - Last Modified By: rdu at 12/02/2017 6:02:47 PM

When conducting experiments, having an accurate and informative way to communicate your learning and observations to others around you is essential.  The Scientific Method is a useful way of explaining an experiment and its results, and should allow anyone else to reproduce your experiment.  The template attached will be used in a range of experiments.

Edit   Delete - Last Modified By: rdu at 17/02/2017 11:10:12 AM