Biol Report 2

1. Scientific Method

Illustrate with an example of daily life how you can use the scientific method to solve a problem. State the introduction (Definition, purpose, question, hypothesis), procedure, result and conclusion.

INTRODUCTION

· Scientific method is research method in which a problem is established. Important details are assembled, from this details a hypothesis is expressed and later on a hypothesis is tested empirically.

· Question. Which Freezes Faster? Water or Sugar Water?

· Purpose. I want to establish whether water reaches its freezing point faster on its own or with sugar impurities introduced to it.

· Hypothesis. To this test the null hypothesis remains that there might be no difference in the time taken for the water to freeze, irrespective of whether sugar impurities are added or not. The next option hypothesis might be there will be a slight difference in the time taken for the water to freeze in the two scenarios.

Procedure.

· Equipment's used and the purpose of their use.

1. 1 Large Bowl

2. 1 ¼ Measuring Cup

3. 1 Gallon of Water

4. 6 Identical Containers

5. Supply of Sugar

6. 1 Freezer

7. 1 Refrigerator

8. Cleaning Tools

· Place a bowl on top of the table and add 1.025 cup of water and put the water into the plastic cup.

· Fill up the six plastic cups in with the same quantity and ensure all the measuring and pouring is done above the bowl to collect any spilling excess water.

· Label two of the plastic cups as “water”

· Using a teaspoon, add one each to two other different cups and label them as “less sugar”

· To the last two cups add one teaspoon of sugar to each and give the label of “concentrated sugars”

· Ensure that the sugars are stirred until they fully dissolve.

· To ensure that all the samples (water and water sugar) are of the same temperature, place all the six samples into a refrigerator for a lengthy time period before proceeding with the experiment.

· Ensure the freezer is also set at a desired temperature and should not be adjusted until the end of the test. Set it as high as possible.

· Put all the 6 plastic cups holding the samples into the freezer with an equal distance from the cooling radiators of the freezer.

· Keep checking after every six minutes until when they start freezing.

· Adjust the checking time and check after every one minute

Results

· Once they have frozen completely, draw them from the freezer note down the time instantly so avoid forgetting. Results should recorded in a table similar to this:

· Out of the two samples used for each test, calculations should be done to get the average of each similar sample

· The average results shall be noted down in a table

Conclusion

· Through the establishment of the freezing times, I have concluded that the predictions I had made relating to the effect of sugar in water freezing is very correct and my hypothesis is affirmed from both the observation and the data.