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Properties of Matter

Second grade Baylor Science Institute 2012
by

Greta VanBrackle

on 17 July 2015

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Transcript of Properties of Matter

TEKS

2.5A Classify matter by
physical properties
, including shape, relative mass, relative temperature, texture, flexibility, and whether material is a solid or liquid.

2.5C Demonstrate that things can be done to materials to change their physical properties, such as cutting, folding, sanding, and melting.
Properties of Matter
1. Observe CUP 1 with your naked eye. Draw a picture of what you see.
Mystery Sand
Materials:

graduated cylinders or cups (clear)
water
vegetable oil
food coloring
seltzer tablets
Liquid Columns
What items on your tray
are liquids?
ENGAGE
Add the liquids carefully to the graduated cylinder in the order you chose.

Observe! Think about the properties of the liquids (color, droplet size, etc.)
EXPLORE!
List all the possible combinations for what order you could add each liquid to the graduated cylinder.
Decide as a group which order you want to add the liquids, and circle it in your notebook.
Draw a diagram/picture of the graduated cylinder and its contents. Use colored pencils, and
LABEL the oil, water and food coloring.

Remember the ABC's of drawing!
Describe what you see. Where is the oil? The water? The food coloring?
EXPLAIN
Why does the oil float on top?

Oil is less dense and more buoyant than water.
Why do the oil and water not mix?
Oil is
HYDROPHOBIC
(great vocab teachable moment for advanced students!). Oil molecules are non-polar, but water molecules are polar.
Why doesn't the oil get colored by the food coloring?

Food coloring is water-based, so it's
HYDROPHILIC
.
Fun Extension:
Predict what will happen if you drop the white tablets in.
Drop the tablets in. Observe carefully and draw what happened in your notebook.
What do you think the white tablet is?
Did the white tablet change the physical properties of the liquids?

2. Observe CUP 1 with a hand lens, and feel the matter in CUP 1. Write a list of properties (brown, gritty, rough, speckled, etc.)

3. Pour the contents of Cup 1 into one of your cups of water.
Observe with your eyes and hands.
Draw a picture, and write your observations.
How did the matter change after water was added?
Repeat these steps with Cup 2.
Does this remind you of anything in our Liquid Columns investigation?
How are the properties of the contents in Cups 1 and 2 different?
Materials:

Play sand or natural sand
Magic Sand (Steve Spangler) or Aqua Sand or make it yourself
Clear, not translucent, cups
Water
Hydrophobic Sand recipe:
sand (colored is optional)
Water proofing spray
Cookie sheet
1. Spread the sand onto the cookie sheet.
2. Spray the sand evenly with water proofing spray, and shake the tray. Do this several times.
3. Allow the sand to dry completely in the sun.
Full transcript