Peterson

In: Science

Submitted By msg8924
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Pages 2
Watch the demonstration and write your observations. Be sure to include a sketch as part of your observation.

Fill in the blanks: stick water Oxygen surface drops rains Hydrogen liquids

Surface tension is a special property of _______________. It is a force that acts on the particles at the __________ of a liquid. Surface tension can make some liquids form spherical __________ like beads of water that form on leaves or other surfaces after it ____________. ___________ has surface tension. Water is made of two atoms of __________ and one atom of ___________, H2O. The Hydrogen atoms have a slightly positive charge and “_____________” to the slightly negative Oxygen atoms of surrounding water molecules.

Glue this side down into your science notebook.
______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________ ______________________________________

Liz LaRosa 5th grade science www.middleschoolscience.com 2009

Problem: How can we make a paper clip float on top of a glass of water? Can more than one float at the same time? If so, how many? What happens to the paper clips if the surface tension breaks?

Practice: Tomorrow we will do our surface tension experiment. In order for the lab to be successful, you will need to know how to use a pipette and release uniform drops of water. You will also need to have a steady hand. This is a skill that takes patience and practice.

Explain what surface tension is in your own words and what you learned from today’s demonstration.

________________________________…...

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