i have recently made a new tab called the "SRP report"
(see top of page)

this is where i shall put the overall information of the report
so that you can see the process
without having to read about the information

don't know if this is neccessary or not...HELP!
need some way of putting all the cokes, lemonades, and fantas together... but don't know how


the average table:
i don't think i spent my time wisely yesterday :(
i only..
- made my average results table
- filled in half of my cover sheet and crest award sheet
- found more information on sodium and teeth
- pasted my results onto my report (which took a long time because there was technical difficulties with the computer)
- looked at what i needed to do in the srp booklet (didn't necessarily do it though) AND
- complained about the amount of work i have to do and the short period of time i have to do it in

i have HEAPS more to do, and EVERYONE seems to be further ahead in finishing their report, so i better get started

and hopefully i'll get it done

well... this long weekend, i have heaps to do (most of them related to science)
and hopefully I'll have them all done :S

what i need to have done for the SRP:
- SRP report
- SRP booklet

what i need to do:
- fill in the cover sheet and the crest award sheet
- find more sources of information of sodium, teeth and the relationship between them
- do the report:
[make an average table]
[remember to reference EVERYTHING in the report- refer to apa]
[NEED to thank Brenda for method]
- do the booklet:

(hopefully that's everything)


btw does anyone know what we need to have for the next blog marking??

thankyou

goodluck to everybody!!!
don't leave things till the last minute

ALL 24 EGGS:









pics for trial 2:

doing the experiment:







eggs:

well, on Thursday(03-06-10), i asked ms zhang about whether i was copying from brenda's method or not and if i could use it. she said i could use the method, but still need the permission from brenda to use it (because i found the idea from her, and not the site).

so then on friday i asked brenda and she was fine about me using the same method. as i recall, her exact words were ' yea, sure'.

i still need include her in my report, thanking her for helping me out.



anyways, getting back to the experiment..

this is the new new table:these are the modified results of trial 1: and the results for trial 2: i will only be conducting 2 trails for this experiment
(mainly because i have run out of time, and because the materials are expensive)

and now that that is done, i have to start my report.



note: RESULTS AND COLOUR
colour white=255
therefore, if all white, colour= 255 x 3= 765
so the closer the total colour number is to 765, the closer it is to white
therefore, the higher the number, the lighter it is; the lower the number, the darker it is

and if the egg is 'lighter', then the 'after' result colour number should be greater (and therefore lighter) than the 'before' colour number.
therefore, it should be a positive difference.
if it is a nagative difference, the 'before' colour number is greater(and therefore lighter) than the 'after' colour number.
which means it became 'darker'

~continued from last blog~

i just looked through brenda's blog again. and

she actually found how to determine the colour difference from this site:
http://answers.yahoo.com/question/index?qid=20081218170741AA4WUQs

but she decided to use this 'method' before i even considered it

so, yes, i will still ask her about it
but i don't think i'm copying her, considering that i had no idea anyone else had the same idea till 10pm today, and considering that the 'method' came from the internet (and therefore she did not come up with the idea herself)

well, i hope that sorted things out

i would like to thank brenda for this very awesome idea

i was looking through other people's blog and found that she has done (kinda) the same layout of the results table. so what she did was she got the colour number for red, green and blue( just like i have done) and she calculated the total for before and after results.

in other words,
if, in the 'before' results,
red= 211, green=178, and blue=125, the total is 514, and
if, in the 'after' results,
red= 202, green=189, and blue=170, the total is 561.
the difference would then be 47
(note: these are the results from brenda's results)

how she came up with this idea, i have no idea, but it is very clever. this will help me tie up my results.

yes. so that is the way i will be calculating my results.

thankyou very very very much brenda
(this isn't considered copying is it? i mean, i just needed ideas on how to get my results to give me an actual...result. but just in case, i shall ask brenda the next time i see her. and hopefully everything will go well from there)

btw. i just started the 2nd trial today and realised that if i do experiment for coke, fanta and lemonade at the same time, i could perhaps finish it in 5 days!!

hooray

"The longer you wait to have a tooth treated the more intensive, lengthy and costly the treatment will be."

more info:
apparently sodium compounds (especially sodium bicarbonate) prevents tooth decay. click here for info from site


help from wikipedia (for background information):
click here for info about sodium benzoate -(in listerine)
click here for info about sodium monofluorophosphate -(in toothpaste)
click here for info about sodium chloride -(salt)


more sites:
http://chetday.com/softdrinkdangers.htm

http://www.ehow.com/how_2192676_eggs-as-dental-hygiene-experiment.html



add:
risk assessment-
do not drink any of the liquids as they may contain unhealthy, unknown substances (and it'll taste gross)

i will be conducting a second trial within the next few days
(it takes 15 days per trail, which means i AM putting an effort into these experiments)


only 3 more weeks till the final blog and report is due!!! :(
(including this week), so technically, 16 days.. i think

Note to myself:
- find and include more info in blog!!
- cover sheet, report, booklet and something for crest award in 1 plastic sleeve when hand in (4 things)

REPORT NEEDS:
- abstract
- introduction (includes hypotenuse and aim)
- method (and materials)
- results
- discussion
- conclusion
- references
- bibliography
- acknowledgment
- appendix

Results:

i just realised that i have no idea how to determine whether it's lighter or darker...
so if anyone else has ideas, it would be appreciated :)

i was looking over my notes the other day and i remembered the teacher saying something about the experimental design method (writing up the method in paragraph form)

so just in case we're to be marked on that,

METHOD:
A dozen uncooked eggs were collected, numbered and photographed separately for later uses. Eight plastic cups were collected, four of which were used to pour 140mls of listerine, 140ml of toothpaste solution (ratio of toothpaste to water 1:13), 140mls of salted water (ratio of salt to water 2:5), and 140mls of tap water. The first four eggs were then placed into the four plastic cups. The eggs were left to sit in the solvents for three days before carefully picking out and placing the eggs on a stand to air dry. The other four plastic cups from the eight collected, were then used to pour 140 mls of coke. when all four eggs had air dried, they were then placed inside the soda solution. the eggs were then left aside for 2 days. when the 2 days had expired, the eggs were gently picked out, lightly dried, then scrubbed clean. photographs were taken of the four eggs and compared to the previous photographs taken. observations and colour differences were then recorded in a table. the experiment was then repeated using 140 mls of lemonade then 140 mls of fanta instead of using 140 mls of coke.

how i am obtaining the results:
as you should know by now, if you have been following the blog, my results are based on colour. this may affect my results greatly, so for a more accurate measure, instead of using a colour chart like these (shown below), on the eggs




i'll be determining the colour difference using the 'colour picker' tool in the paint program, using the photographs i took.



this tool will tell me the exact colours of the eggs in a particular spot. because i took the pictures uniformly (using no flash, eggs seated in exact same spot every time, camera seated in exact same spot every time), picking the spot to tell the colour difference would be quite simple. i only need to find the exact width and length of each picture and press the button. this will give me the hue, sat and lum (but because i have no idea what those terms really mean, i'm going to use the 'red, green and blue' side)

the NEW table:

NB: process for determining the colour difference:

step 1: set the layout as 'show rulers and gridlines'
step 2: collect the 'before' and 'after' photo for egg 1
step 3: paste them onto paint, making sure that they are aligned
step 4: using the 'colour picker' tool, set and right click on the 300 x 200 margin this colour should be saved to "color 1"
click on "edit colors" and record the 'red, green and blue' numbers
step 5: using the 'colour picker' tool, set and left click on the 1000 x 200 margin this colour should be saved to "color 2"
click on "edit colors" and record the 'red, green and blue' numbers
step 6: record the results in the table
step 7: complete steps 2-6 for the remaining eggs


pictures to demonstrate what i mean:

steps 1-3:step 4:

RESULTS:

FANTA:







to view all pictures taken...