Reflection: Lesson Planning Chemical and Physical Changes Lab - Section 3: Investigation (Lab)

 

I know that I am very fortunate in my current position to have access to scientific equipment. Having taught at many different schools, I know that this is not always the case. This lab is based on students using laboratory equipment. If you don't have access to this sort of stuff - don't despair. I've tried to use as many household chemicals (vinegar, sugar, ice, etc...) as possible.

Be creative - clear plastic cups can be substituted for beakers, especially if you can use a Sharpie marker and label standard metric measurements on the side (cover with clear packing tape for longer lasting markings). Metal shot glasses can be used to heat sugar over a candle flame, if test-tubes are too expensive. I would stay away from using metal spoons to heat the sugar over a flame - you don't want your activity to look like a meth lab!

Your students are worth the trouble of making equipment. Every student should be entitled to a quality scientific education. Feel free to modify the Chemical and Physical Changes Lab, it is saved as a Word document and easing edited.

  Lesson Planning: Classroom Equipment
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Chemical and Physical Changes Lab

Unit 2: States of Matter
Lesson 5 of 5

Objective: Students will be able to use evidence to determine if a reaction is a chemical or physical change.

Big Idea: Five reactions will be created and observed by groups of students. Collected evidence will be used to figure out which reactions are chemical changes and which reactions are physical changes.

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  95 minutes
burning sugar photo
 
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