Whew - an early release day makes for a compact day in the laboratory. Thanks to all the students today for keeping their focus during an alternate schedule and completing the lab safely and completely. We began today with a bell ringer to review physical and chemical properties and heterogeneous and homogeneous mixtures using Venn diagrams to help us compare and contrast these concepts. We tossed around many different ideas today but I think by the end of the review, all of us could compare and contrast these topics. Our goal for lab today was to collect data on the physical properties of four different substances. The data we collected will be used to determine a procedure for separating an unknown mixture of these pure substances during class on Friday. I love this lab! First, it allows us to practice lab skills such as measuring and filtration. It also reinforces the concept of physical properties as we look at magnetism, solubility, and melting point. ( I also enjoyed how everyone loved the iron filings and the magnet.) Finally, this lab allows us to devise our own procedure to apply these concepts. I'm really excited to see the flow charts next class. Don't forget, we are in lab for part of the class on Friday so close-toe shoes again. Can't wait for Friday!
Mrs. E
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