Physics Grade 10 Gas laws Isoprocesses Lesson plan (1)

Long-term plan section:

School:

Date:

Teacher name:

Class:

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Theme of the lesson

Isoprocesses

Learning objectives

To apply gas laws when solving calculation and graphics problems

Lesson objectives

Learn how the relationships on graphs relate to the general ideal of ideal gas law, Boyle’s, Charles’ and Gay-Lussac’s laws.

Learn to use the graphical representation of isoprocesses.

Assessment criteria

Students can use graphs of isoprocesses to solve problems.

Language objectives

Students can use correct vocabulary to explain orally how the ideal gas model accounts for behavior of gases (speaking and listening skills).

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

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.

ICT: for Gay-Lussac’s law the video is recommended to be shown to students on plotting graphs for isoprocesses in Microsoft Excel (https://www.youtube.com/watch?v=_r-iBegxxuE)

Previous learning

Theory on Charles’ law, Boyle’s and Gay-Lussac’s laws.

Lesson procedure

Planned stages

Planned activities

Resources

Beginning

5-7mins

Students are given some questions to revisit and refresh their memory of the ideal gas law relationship.

(5-7mins)

Slide 1

Middle

20mins

Teachers can demonstrate with PASCO data loggers or via video clip the graph of pressure changing with volume at constant temperature.  (3mins)

Questions: Ask students to predict how the number of moles will change the values of the graph.

Questions: Ask students to explain the best way to show the pattern concisely. (5mins)

Teacher can use PPT to introduce the idea of isoprocesses and graphical representation as an efficient way to read and predict how gases behave.

Students solve the problems from the PPT on isoprocesses. Teachers can assess student’s progress by checking their work individually or as a group.

(10-12mins)

Slide 2-5

Charles’ law: https://www.youtube.com/watch?v=dfcItBYyOHo

Boyle-Marriot's law: https://www.youtube.com/watch?v=YpWd2TiiYXs

Gay-Lussac’s law: https://www.youtube.com/watch?v=FHyN4BK_PlE

Remind students of the health and safety requirements and rules for the demonstration (if shown using PASCO).

End

13-15mins

Group work:

Ask students to find real life examples of isoprocesses by doing a quick search on the internet, and explain/sketch the type of graph they expect the process would have. Students can get into a circle to present their findings and explanations to the class.

Differentiation: Weaker students pair in groups and work with more able students to make a short presentation or list with samples of isoprocess graphs included into the presentation.

The problems left in word document “Questions and problems” might be given as a homework

Slides 6-9

Word document “Questions and problems”

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

Weaker students pair in groups and work with more able students to make a short presentation or list with samples of isoprocess graphs included into the presentation.

Students will attempt to complete the tasks and teacher can check the progress individually or in groups.

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