Activity
Teach Engineering

Balancing Liquid on a Coin: How Intermolecular Forces Work

For Teachers 9th - 11th
Let knowledge of chemistry flow like water. Future scientists conduct two different experiments to investigate the properties of water. They learn about surface tension and cohesion as they see how many drops of water they can place on a...
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American Chemical Society

Evaporation Sensation

For Students K - 5th
Where did the water go? Learners conduct an experiment to see how the difference in temperature affects evaporation rates. Scholars continue to investigate evaporation by comparing water and alcohol evaporation rates. Pupils experiment...
Activity
Science Buddies

Science Buddies: Measuring Surface Tension of Water With a Penny

For Students 6th - 8th
Have you ever wondered what makes water 'bead' up on a freshly waxed car? In this project you'll investigate the chemistry of surface tension by measuring how many drops of water a penny can hold.
Activity
Middle School Science

Middle School Science: "Sinkin' Lincoln" Lab (Lesson Plan)

For Teachers 3rd - 8th
In this lesson plan site, students will "Define surface tension, determine what factors affect surface tension, and collect data on how many drops of water a penny can hold."
Activity
TeachEngineering

Teach Engineering: Wet Pennies

For Teachers 6th - 8th
Students conduct a simple test to determine how many drops of each of three liquids can be placed on a penny before spilling over. The three liquids are water, rubbing alcohol, and vegetable oil; because of their different surface...