Penny Lab

Published: 2021-09-30 12:05:04
essay essay

Category: Water, Experiment

Type of paper: Essay

This essay has been submitted by a student. This is not an example of the work written by our professional essay writers.

Hey! We can write a custom essay for you.

All possible types of assignments. Written by academics

GET MY ESSAY
Penny Lab Experiment
Objectives
To determine how soap affects the surface tension of water. Hypothesis In this experiment the hypothesis was that soap was going to affect the surface tension by weakening the bonds and allowing less water on the penny.



Materials

Penny
Beaker x2 (One containing soapy water the other containing pure tap)
Paper towels
Lab review sheet
Pencil
Pipette

Procedure First we picked who would drop the water onto the penny. We did this to ensure that the drops were even in size.
We then carefully dropped water from the dropper onto the head side of the penny while counting the number of drops.



Data
Trial 1
Trial 2
Trial 3
Average



Tap Water
37 drops
32 drops
44 drops
37 drops



Soapy Water
16 drops
14 drops
10 drops
13 drops




Calculations Tap Water - (37+32+44)/ 3= 37 Soapy Water- (16+14+10)/3=13 -Conclusion In this experiment we confirmed the hypothesis that soap affects water by lowering surface tension thus lowering the amount that can fit on a penny.
Post Lab
Explain what surface tension is/ Surface tension is water’s ability to stick to itself. Why were many trials taken and averaged? / To get better and more accurate responses. In this experiment, what was your control group? / The plain tap water. Identify the independent variable in the experiment. / The soap in the water. Identify the dependent variable in the experiment. / The amount of drops that would fit on the penny. What if the question was how does sugar affect surface tension of water?
Using the scientific method answer how you would answer this question. First we would make an observation about how water’s surface tension could be affected. Next we would propose a hypothesis. Like if we add sugar to water the water’s surface tension will be greater. Then we would follow the steps of the experiment performed earlier. We would then be able to prove or disprove the hypothesis we created. Then we would draw conclusions based on our results.

Warning! This essay is not original. Get 100% unique essay within 45 seconds!

GET UNIQUE ESSAY

We can write your paper just for 11.99$

i want to copy...

This essay has been submitted by a student and contain not unique content

People also read