Drops On A Penny Lab Worksheet Answers

The number of water drops that can fit on a penny will surprise you. The hydrogens of one water molecule are attracted to the oxygen from other water molecules.

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Data is information gathered during an experiment were you right.

Drops on a penny lab worksheet answers. Drops on a penny. Surface tension is what makes water dome on the penny. Surface tension refers to waters ability to stick to itself.

Hydrogen bonds and surface tension give water some amazing properties. Wash and rinse a penny in tap water. The dependent variable in this experiment was the number of drops on a penny.

Lets use them to see how many drops of water fit on a penny. The three liquids are water rubbing alcohol and vegetable oil. Add one or two drops of soap to the cup of water and see how this affects the number of paperclips it will hold.

You will make a hypothesis and perform an experiment to see how many drops of water can fit on a penny. The flatter the surface the better this experiment is. Biology penny lab 1.

When the water falls off of the penny record the number of drops. In this lesson and its associated activity students conduct a simple test to determine how many drops of each of three liquids can be placed on a penny before spilling over. You will then get results and make conclusions based on the results.

Counting drops on a penny 1. 2 drops on a penny lab introduction i pass out the lab materials and safety goggles. I have also included information and worksheets for a demo i use to introduce the concepts of cohesion and surface tension prior to having my students complete the penny lab.

Place the penny on a flat surface. Because of their different surface tensions more water can be piled on top of a penny than either of the other two liquids. Drops on a penny lab worksheet penny lab pdf the download includes a lab worksheet and teacher notes.

Surface tension refers to waters ability to stick to itself. Dry it completely with a paper towel. Wipe the water off of the penny.

This lab illustrates scientific method tension. 7th grade environmental science. Surface tension is the name we give to the cohesion of water molecules at the surface of a body of water.

How many drops can fit on a penny lab the purpose of this lab is to see the steps of the scientific method in action. The number of drops that fit on penny will surprise you. The independent variable in this experiment was the side of the penny.

Check to make sure all of the materials needed are at your lab station. Surface tension can be measured and observed by dropping water drop drop onto a penny. Surface tension can be measured and observed by dropping water drop by drop onto a penny.

Penny lab answer key a. Using a dropper bottle containing only water count the number of drops of water that you can balance on top of a penny. You can also give the students a chance to try this demo again after they have completed the penny lab.

Surface Tension Liquids Stick Together