The fastest way to cool the can drink is by PUTTING IT IN A BUCKET OF ICE AND SALT!

Looks like our hypothesis was wrong!

More results

BUCKET OF ICE AND WATER(840g)

Start: 28.41

1min: 17.94

2min: 13.20

3min: 11.42

4min: 10.23

5min: 9.65

BUCKET OF ICE AND SALT
Start: 28.41

1min: 13.91

2min: 6.83

Bucket of ice

A bucket of 840g ice is the fastest way so far.

Start : 28.41degc

1min :16.87degc

2min: 13.67degc

3min: 11.18degc

5min: 7.72degc

Fridge

Here are the results. Unfortunately, it did not reach 10degc. In fact, after it reached a certain temperature, the temperature increased. we thought we did something wrong so we repeated it and the result turned out to be the same.

REFRIDGERATOR

Start : 28.41degc

1min : 28.11degc

2min : 27.7degc

3min : 27.3degc

8min : 26.59degc

10min : 25.56degc

15min : 23.96degc

20min : 23.34degc

25min : 22.73degc

30min : 21.62degc

35min : 20.71degc

40min : 19.96degc

45min : 19.6degc

50min : 19.13degc

55min : 18.65degc

1hr : 17.94degc

1hr 5min : 17.82degc

1hr 10min: 17.11degc

1hr 15min: 16.40degc

1hr 15min: 16.28degc

1hr 20min: 15.81degc

1hr 25min: 15.21degc

1hr 30min: 14.98degc

1hr 35min: 14.86degc

1hr 40min: 14.38degc

1hr 45min: 13.91degc

1hr 50min: 13.91degc

1hr 55min: 13.53degc

2hr : 13.31degc

2hr 5min : 12.93degc

2hr 10min: 12.43degc

2hr 15min: 12.38degc

2hr 20min : 12.25degc

2hr 25min : 12.49degc

We have decided to eliminate the bucket of cold water component, as it is really hopeless.

We measured the temperature of cold water, and it is around 11degc. It would be impossible for it to reach 10degc.

Freezer

It takes 43mins to cool a can of drink to 10degc by the freezer. Here are the results:

Start: 28.41degc

1min: 28.11degc

2min: 27.5degc

3min: 27.1degc

8min: 23.65degc

10min: 21.92degc

15min: 19.72degc

20min: 18.18degc

25min: 16.28degc

30min: 14.26degc

35min: 12.84degc

40min: 11.42degc

41min: 11.06degc

42min: 10.71degc

43min: 9.50degc

more results coming soon

about the experiment procedure

ok so this is it erm firstly i will pass the dataloger to sabrina so she might do the experiment first if no one is going to start ok?maybe i would go to her house on sat to see if possible anyone can make it??? try laaa(:

Criterias for Science Project

Hey peeps, when doing presentation for the science project, consider the following:

(taken from E-Learn Portal, Science)

Presentation Rubrics (30marks)

Communication Ø Visual contact Ø Confidence Ø Loudness Ø Clarity

Explanation Ø Methods of experiment Ø Conclusion Ø Point out difficulties faced

Data Presentation Ø Appropriate tables, charts, graphs Ø Visually appealing

Group Effort Ø Every member presented and answered equally Ø Each member knows what the other members are doing

Questions Ø Able to answer questions posed with clear explanations

Engaging the Audience Ø Presentation is enthusiastic Ø Presenter demonstrates knowledge at expert-level in this field Ø Presentation is conversational, rather than memorized.

Report Rubrics (30 marks)

Abstract Ø Able to summarize the contents of your report; Ø Able to tell what question you asked, which data and methods you used to research your question, Ø Able to conclude from your research;

Background information on topic Ø Able to state purpose of topic chosen; Ø Creative in choosing of topic; Ø Able to state question clearly and has a specific purpose; Ø Able to state expected result based on current knowledge;

Research Method ØAble to explain the approach you took to answer your research question; ØAble to state data or protocols you used and how they are useful in answering your question; ØAble to describe the scope of your research (e.g. time period, area, or specific sites involved);

Data Summary & Analysis ØAble to write observations clearly; ØAble to present data in graphs/ charts/ tables etc; ØAble to use correct measurement units; ØAble to use observations and data to explain; ØAble to discuss if hypothesis is correct, and explain the reasons if wrong;

Discussion ØAble to discuss the strengths and weaknesses of your approach and results; ØAble to outline what you or others should do to extend or improve your research; ØAble to impact outside of the classroom;

Conclusion ØAble to present the conclusions you reached about your research question; ØAble to explain how you arrived at these conclusions based on your methodology and data analysis, showing your reasons; ØAt least 5 major references cited;

Powerpoint

Hey guys!

Pls look at the powerpoint i sent you and make your own changes and send it back to me.

Sab

ok so who is gonna do the presentation??

part two of the paper

Experimental Procedure setup:1.get 6 cans of soft drink at room temperature and put them in a bucket of ice,bucket of ice and salt,bucket of cold water,bucket of cold water with ice,freezer,fridge.

2.Check the temperature of the cans every minute and the first can to reach 10 deg.c will win the race.

3.repeat another time for acurate teating.

----also if there is no laboratory thermometer,use a dataloger.

Independent Variable:cooling agent

Dependent Variable:the temperature of the can drink.

Controlled variable:6 canned drinks of same temperature,conditions of the room,same amount of cooling agent.

part one of the paper

hey peepo,since i got the paper and would not be in singapore i would post the proposal form on the blog.this is the proposal form......

Group name: SMKYD_SSP class: 1C

name:1.sabrina chau shu ning

2.chin khar yi

3.debbie soh li fei

4.megan leong

hypothesis:A can of soft drink can be cooled the fastest by placing it in the freezer.

expected date of research completion:27 june

Apparatus and Materials needed:freezer,fridge,bucket of ice,bucket of ice with salt,6 canned drinks of the same type,cold water in a bucket,laboratory themometer,stopwatch/timer,bucket of cold water water with ice

guys,so when should we meet cos i got the data loger come on peeps i think we will soar and rule this project!!!

Okay, this is an outline of the table we need to do for our project.

Results :

	Bucket Of Cold water	Bucket Of Ice	Bucket of Ice and Salt	Bucket of Ice and Cold water	Refrigerator	Freezer

Starting!

Hi everyone!

Okay, we got the green light on our project! We got the whole 5 percent!

We should begin soon!

-Sabrina

example: credicts http://www.wikihow.com/Chill-a-Drink-Quickly

1. 1. Measure the temperature of the drink. This step is optional; once you open a can, this method won't be as effective. If this is your first time trying it, though, it will be interesting to record how drastically the temperature can change
2. 
   2. Fill a bowl (the thicker and/or more insulated the better) with water and add ice to it. Add as much ice to the water as you can, but not so much that it prevents the entire beverage container from being submerged into the water. A 50/50 mix of ice and water is a good rule of thumb.
3. 3
   
   
   Add table salt to the ice. A small handful should do. The salt will dissociate into it's constituent sodium and chloride ions. The water molecules, being polar, will orient themselves accordingly. This is work, and work requires energy which comes from thermal energy in the water, thus reducing the ambient temperature further.
4. 4
   
   Place your drinks in the ice water solution and rapidly stirthem all around. By stirring, you're using forced convection to speed the transfer of heat out of your drink and into the ice water solution.
5. 5
   
   
   Wait two minutes. Measure the temperature of one of the drinks - the temperature should have fallen dramatically in a very short time. If it needs more time chilling, stir the remaining drinks in the salted ice water for another minute or two.
6. 6
   
   Enjoy your cold drink. It should now be about the perfect temperature to quench your thirst.