Wednesday September 17, 2014

LTLT:  I can identify properties of substances in a mixture to determine how the mixtures will be  separated. LT: I can separate a mixture using chromatography Criteria for Success: ·      I can complete a chromatography lab ·      I can explain how chromatography is used to help separate a mixture. Agenda: Warm up Evidence Folders Quick notes Lab Lab Questions Debrief   Warm up: Each student receives a coffee filter and is asked…” What can you do with this BESIDES make coffee?” Review LTLT, LT and CS Evidence Folders *Make & Hand back work *You have 1 week from today for any revisions    Quick Notes:   What is chromatography?   Lab                                        Assign groups: 3 per group Lab questions   Debrief: What is chromatography? How could you use chromatography to help you separate a mixture? CHROMATOGRAPHY   LTLT1-Daily Learning Target: I  can separate a mixture using chromatography. Chromatography-______________________________________ _____________________________________________________ _____________________________________________________   Chromatography Lab ·       Materials: Water, beaker, pencils, tape, coffee filter, ruler, markers ·       Procedures: See sheet on your table. Set-Up for Coffee Filter Answer the following questions once you have completed the activity. 1. Draw a diagram of what happened to the marker on the coffee filter in this activity. 2. Describe in words what happens when the water goes up the coffee filter and mixes with the  ink from the marker? _______________________________________________ 3. What do you think is taking place when the water goes up the coffee filter and mixes with the ink from the marker? USE YOUR NOTES OR ASK ME IF YOU NEED SOME HELP! __________________________________________________________________________________ 4. How does chromatography relate to separating mixtures?   PROCEDURES GROUP MEMBER #1 1)   Pick up a coffee filter and a ruler. 2)   Draw a square in the middle of the coffee filter that is 10cm by 12cm. USE PENCIL. 3)   Divide the square into 6 rectangles each 2cm by 10cm . GROUP MEMBER #2 4)   Cut out each of the rectangles 5)   Draw a line (IN PENCIL) 3 cm from the bottom of the strip 6)   Take one of the markers and draw a line over your pencil line. GROUP MEMBER #3 7)   Tape the other end of the strip to a pencil 8)   Take a beaker and put 1cm of water in the bottom of the beaker 9)   Place your coffee filter strip in the water so that the bottom of the strip is in the water. Do not let the line of ink go below the water line and watch what happens.