You will Need:1. Pencil, 2. CSI Mystery Powder Lab –

Passed out Yesterday

1.Test #4 – ½ page of notes, front side only, done by hand – Target Concepts on-line (Tuesday, Dec. 17th)

2. No Binder Check this time

3.Progress Notices – Please line up in ABC order.

1. Long Hair MUST be tied back

2. Loose sleeves, bracelets must be pushed up or removed.

3. Appropriate Lab Behavior

4. Consequence = Book Work-

See Side Board

-10 points will be taken for unclean labs

1. Sinks clean 2. Counters & Table Tops Clean & Dry3. DO NOT sweep powders onto floors4. DRY the inside of the Supply Bag

(Testing Equipment)5.Powder Bags stacked straight up

inside Large Zip Lock Bag

Let Me KnowLet Me Know if supplies need to be if supplies need to be added/changedadded/changed

Problem: Can we identify a mixture of 2 different powders based on their Physical & Chemical properties?

Hypothesis: IF we test five different powders using our senses, solubility, iodine, vinegar and heat test THEN we should be able to identify a mixture of any 2 powders.

StickyBlackSilkySmoothRoughHardCrunchyRubberyMilkySoftGrayYellowBrightCrystallineWhiteDarkBlackSilkySmoothRoughRoughOpaqueB right

DarkBlackSilkySmoothRoughHardCrunchyRubberyMilkySoftGrayYellowBrightCrystallineWhiteDarkBlackSilkySmoothRoughHardCrunchyBright

Flour

Magnifier

Testing Trays (2)

Stir Sticks (4)

IodineVinegar

Solubility Tray- leave out of big bag

1. Problem: Scientific Results must be kept free of contamination…..so…..

2. Do Not DOUBLE DIP!!!!!

3. Clean your hands each time you use a new powder!!!!!

4. Stir sticks should be trimmed when contaminated.

Test Powder #1

Sugar

Powder #2

Flour

Powder #3

Baking Soda

Powder #4

Corn Starch

Powder #5

Salt

SensesSound, Sight, Touch

Smell (waft)

SolubilityThe ability to dissolve, (blend) in water

3 unique bullets for each square – one similie

Get Mrs. M.’s Signature after finishing 2 complete tests

TESTS : Please complete each test on every powder before moving on to the next test.

1.Senses: A. Use your senses of sight, touch and smell. (mag. glass, wafting technique) B. Record your observations into the chart.

Use a variety of adjectives to help establish the unique qualities of each powder.

C. Three characteristics are required

2. Solubility: A. Fill each of your vials with about 2.5 cm of water. (from the sink….be careful with the pressure- TURN ON the SINK 1st) B. Add in a “pinch” of powder. C. Make one observation as the powder is “falling” into the vial. Record . D. Stir in the powder with the stir stick. E. Make a second observation once the powder has been stirred in. Record.

*Since each tray has only 4 vials, you will need to clean the tray out to test your fifth powder.

BRING DATA TABLE UP FOR TEACHER INITIALS.

StickyBlackSilkySmoothRoughHardCrunchyRubberyMilkySoftGrayYellowBrightCrystallineWhiteDarkBlackSilkySmoothRoughRoughOpaqueB right

DarkBlackSilkySmoothRoughHardCrunchyRubberyMilkySoftGrayYellowBrightCrystallineWhiteDarkBlackSilkySmoothRoughHardCrunchyBright

Flour

Magnifier

Testing Trays (2)

Stir Sticks (4)

IodineVinegar

Solubility Tray- leave out of big bag

-10 points will be taken for unclean labs

1. Sinks clean2. Counters & Table Tops Clean & Dry3. DO NOT sweep powders onto floors4. DRY the inside of the Supply Bag

(Testing Equipment)5.Powder Bags stacked straight up

inside Large Zip Lock Bag

Let Me KnowLet Me Know if supplies need to be if supplies need to be added/changedadded/changed

1. Test #4 – ½ page of notes, fronts side only, done by hand – Tuesday, Dec. 17th

2. No Binder Check this time.

3.Progress Notices Thursday