Physics Grade 10 Gas laws Isoprocesses Lesson plan (4)

Long-term plan section:

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Theme of the lesson

Isoprocesses

Learning objectives

To investigate gas volume and temperature relationship at constant pressure (Charles’ law)

Lesson objectives

Learn to use the equation of state for an ideal gas expressed as:  and Charles Law: V/T = constant.

Complete an investigation on Charles law and ideal gases behaviour at constant pressure.

Assessment criteria

Students can complete the investigation on Charles law and plot a graph of pressure versus volume.

Language objectives

Students can use correct vocabulary to explain orally how the ideal gas model accounts for behavior of gases

These include words such as: solids, liquids, gases, microscopic, macroscopic, thermal energy, kinetic energy, heat, random, randomly moving, vibrations, bonds, melting, boiling.

Students learn to use phrases such as:

Heating the... increases the kinetic energy of the particles.

The particles move randomly.

The differences between a solid and a liquid are...

The differences between a liquid and a gas are...

Value links

Values of cooperation and understanding, on how many scientists worked to solve problems in industries over centuries in different cultures and countries.

How scientific discoveries are made, as well as how to solve problems by scientific enquiry are instilled by learning to communicate information in a precise and accurate way.

Cross curricular links

Links to uses of ideal gas laws in chemistry and industrial applications are useful in real life.

Previous learning

Theory on Charles law and how ideal gas law can be simplified to become Charles law at constant pressure.

Lesson procedure

Planned stages

Planned activities

Resources

Beginning

2-3min

Students are familiarized with the topic, learning objectives and lesson objectives of the lesson.

Students are given the “Investigation sheet” to study quietly for 2-3 mins as well as “Practical write up descriptors”

Slides 1-3

Slide 4

Word documents “Investigation sheet” and “Practical write up descriptors”

Middle

30min

Teachers can explain the activity and the steps necessary to complete the activity. This includes all precautions as well as health and safety instructions. 

Students can then ask question on keywords or instruction which may not be clear to them (5min)

Students attempt the investigation in groups of 2-3 students and work together to complete the write up.

Note that this investigation can be complete by the students practically or the experimental, as the experimental set up can be replaced by a video clip and a set of data provided to the students for the purpose of analysis due to time or other constraints. (Lack of sufficient apparatus etc...)

Teachers should be working with each group during the investigation and assessing their progress and giving guidance if students need help. (25min)

Differentiation: More able students can complete all parts of the experiment and make estimations on the uncertainty of the data used for the investigation.

Slides 6-7

Slide 5

Remind students of the health and safety requirements and rules (word document “Health and safety rules”)

End

5min

Students can work in groups to self-assess their progress and complete the write up as homework. (5min)

Slide 8

Differentiation - how do you plan to provide more support? What tasks do you plan to set for more capable students?

Grading - How do you plan to check students' level of learning?

Health & Safety

Students with higher ability can attempt to do an error analysis and find a simple value for the uncertainty of their data.

Students will attempt to complete the tasks and teacher can check the progress in respective groups of students doing the experiment.

Be aware spillages and wear goggles if necessary to protect the eyes. Take precautions with syringes and electrical equipment if used.