Water Properties and Experiment Results

Mr. Kobe conducts a makeup lab experiment to demonstrate the effects of cohesion and surface tension by counting how many drops of water can fit on a penny before spilling. He uses both tap water and soapy water, noting the differences in results. The experiment is followed by data analysis, where students are tasked with graphing the results and answering questions based on the data collected.

What materials were used in the experiment setup?

• Beaker of tap water, penny, and oil

• Beaker of tap water, nickel, and soapy water

• Beaker of oil, penny, and soapy water

• Beaker of tap water, penny, and soapy water

What property of water allows it to form a dome on the penny?

• Condensation

• Adhesion

• Cohesion

• Evaporation

How many drops of tap water were added before it spilled?

• 40

• 35

• 34

• 30

What was the result of the experiment with soapy water?

• 20 drops before spilling

• 18 drops before spilling

• 30 drops before spilling

• 25 drops before spilling

What was the main difference observed between tap water and soapy water?

• Soapy water had more drops before spilling

• Tap water had more drops before spilling

• Tap water had fewer drops before spilling

• Both had the same number of drops before spilling

What was the average number of drops for tap water according to class data?

• 40.2

• 37.8

• 42.1

• 34.5

What was the average number of drops for soapy water according to class data?

• 22.5

• 20.1

• 17.9

• 15.3

What is the next step after analyzing the data?

• Submit the data

• Create a graph

• Conduct another experiment

• Write a report

What should students do with the questions on the back of the handout?

• Submit them without answering

• Discuss them in groups

• Answer them

• Ignore them

What will be discussed in class regarding the experiment?

• The number of drops

• The graph creation

• The type of water used

• The materials used