LAKSHMI FINISHED SRP!!!!!!!!!!!!!!!!!!!!!!

AND SO THE DAY HAS FINALLY COME WHEN SRP IS OVER.

YES IT DEFINITELY DOES FEEL LIKE THERE IS A PART OF ME THAT IS NO MORE...BUT MUST ADMIT IT WAS A PART THAT I REALLY DIDN'T WNT IN THE FIRST PLACE. :P

SRP is gone and quite frankly, i couldn't be happier :D

heheheheheh tehehehehehe bahahahaha heheheheheh *sigh*

bahahah hehehe hehhehehe

with lots of love and mwahs to SRP,

Lakshmi

TODAY I managed to finish my Introduction, Method AND my Referencing :D

I even cam up with a title for my SRP....my title is

"THE EFFECT OF CITIRC ACID ON THE ENZYMATIC BROWNING OF APPLES"

tehehe as late as it is right now I feel really awake cos i'm finally starting to get some of this stuff done.

:D :D :D :D :D

AND SO I FINALLY CONDUCTED MY EXPERIMENT WITH SUCCESS!!! :D

I started my experiment again and did it from the 5th - 12th of June!

Here are my brilliant results from my awesum expeirment!!!


and so I finally go thte results i was looking for!

finally having some fun!

having happy days with srp,

Lakshmi

grrr my experiment...

Lakshmi's experiment has died again....

I don't get it like very thing is happening exactly the way it's not meant too.

So basically after one entire week of hopeing that things would turn out right..they haven't. The water one in the whitest, the water/vinegar is slightly brown and the vinegar one is the brownest.

WHAT THE HELL IS HAPPENING?

So i have decided to do the entire experiment again but this time with lemon! This decision has been made on the basis that for some reason every website & person that i have visited or talked to seems to be getting great reseults with lemon.

What are the chance that I won't?....

oh *sigh*, *sigh*, *sigh*!

So now.....i am reredoing my experiment and am trying to be as positive about it as i can! I am going to be substituting my vinegar with lemon juice and i'm gonna make a point of cutting my apples with a paring knife to quicken the browning process.

my life...is so SRPed at the moment. Every time i sit down to do something i have like this massive SRP spaz and get nothing done anyway....pft SRP. To all the SRP's out there I hate you.

Either way, i'm going to be starting my experiment with lemon on Saturday!

So wish me luck..trusting my luck i'm going to need all the luck that i can get.

Lakshmi

So I finally restarted my experiment on sunday (30th May)!!
I'v taken photos of my apples for every 10mins and recorded my observations.
I'll be posting all my photos up as soon i can!

that's all really.

I've taken photos after 24hours and will then again after 48 hours. I might even do a photo for after one week. don't noe...see how I go.

so that's all folks. It's nearly 10:30PM and i feel sleepy so i'm gonna go ta sleep.
excitied & confused about the athletics carnival 2morrow,
Lakshmi :)

k...Lakshmi just failed, epically :(

I guess the only good thing that came out of yesterday was that, I have errors to talk about in my discussion. u c... I didn't really think about the fact that if you put an apple in a solution it would float! Because the apples decided to float they weren't fully submerged in the solution resulting in my apples browning really weirdly. For instance the apple in the vinegar solution is really brown at the top but really white on the submerged side.... As a result of these really obscure observations & obvious errors in my experiment I have been forced to start again and am really lacking in motivation...*sigh* However, one thing I have done is....

WRITTEN UP A NEW METHOD!!!

here it is....

NEW METHOD
(Set equipment up as shown in the diagram below)

1. Get three clear, 350mL glass cups and place them on a table
2. Label one ‘A’, another ‘B’, & the other ‘C’

3. Pour 350mL of tap water into cup ‘A’
4. Pour 175mL of tap water & 175mL of vinegar into cup ‘B’ and stir the solution
5. Pour 350mL of vinegar into cup ‘C’
6. Get an apple
7. Cut it into 3 equal pieces that are 1cm in thickness
8. Place one slice of the apple carefully into each of the 3 solutions. Keep spillage to a minimum
9. Cover all three cups with a layer of cling wrap

10. Cover this layer of cling wrap with a layer of aluminium foil

11. Cover this layer of aluminium foil with cling wrap, providing a secure seal for the cup

12. Put a elastic band around the mouth of the cup so that it further secures the cling wrap/aluminium seal

13. Turn each cup from their current vertical positions to a horizontal position

14. Leave all the cups in a cool, dry place for one hour

15. Turn all cups from horizontal position to a vertical position after one hour

(Set up equipment as shown below in the diagram)

16. Get three plastic plates and place them on the table

17. Label one ‘A’, another ‘B’, & the other ‘C’

18. Remove cling wrap/aluminium seal off each cup

19. Remove the apples from the solutions using a pair of tongs

20. Place the apple from glass ‘A’ onto plate ‘A’

21. Place the apple from glass ‘B’ onto plate ‘B’

22. Place the apple from glass ‘C’ onto plate ‘C’

23. Observe apples

24. Record observations on a table like the one constructed below. Take into consideration any other significant observations. Continue the recording of observation every ten minutes for one hour.

25. Take photos of the apples every ten minutes when recoding observations & include it in recording table
26. Repeat entire experiment two more times for reliability

*~*~*~*~*~*~*~*~*

…ahhhh! Now that that’s done I just need to do the experiment! I have planned to start the experiment Wednesday…after school :)

Hoping that everything goes to plan,

Lakshmi :)

LAKSHMI STARTED HER EXPERIMENTY:D!

HEHEHEHE lakshmi is very happy today as on this fine day she has completed the her experiment for her SRP :)
As of 9:30 this morning, my apples have been bathing in water, water & vingar or vinegar!
Here are the happy snappies from this great day so far...

awww....aren't they just gorgeous :)
i'll be taking photos & recording results of my apples at 10:00am everyday for one week.
so until 2morrow @ 10:00 it's good bye,
Lakshmi :)

SAYING BYE TO LEMON & HI TO WATER! :D

As you have probably realised from reading my method that I have decided not to use lemon juice.
After doing intense mathematics during my double history I realised that when you add two solutions that both have a percentage acid of 5.....your solution will still have an % acid of 5.

So this is what i mean...

% of acid in Lemon = 5%

% of acid in Vinegar = 5%

∴ IN a solution of 100mL of lemon & 100mL of vinegar there will be 5mL of acid from the lemon & 5mL from the vinegar

∴The % of acid in the solution is: (5+5) x 100 = 5%

200

pft...so as a result I have decided to use water instead! Water has a 0% of acid! So if I add the two together i should have a % acid of 2.5%....

So this is what i mean...
% of acid in Water = 0%
% of acid in Vinegar = 5%
∴ IN a solution of 100mL of water & 100mL of vinegar there will be 0mL of acid from the water & 5mL from the vinegar
∴The % of acid in the solution is: (0+5) x 100 = 2.5%
200

So! Now that I have convinced myself so much that that works....even if it doesn't im goning through with it.
So now,
I'm going to have three solutions and this is what they're gona have in each:
'A' - Water solution (200mL of water) = 0% acid
'B' - Water/ Vinegar solution (100mL of vinegar + 100mL of water) = 2.5% acid (in theory)
'C' - Vinegar solution (200mL of vinegar) = 5% acid

with the hope of starting her experiment in good time,
Lakshmi

MY METHOD!

Equipment
1 Apple
3 Glass Cups
300mL of Tap Water
300mL of Vinegar
Peeler
Cling Wrap

Method
(Set equipment up as shown in diagram below)

1. Get three medium size, clear glass cups
2. Label them as ‘A’, ‘B’ & ‘C’
3. Pour 200mL of tap water in cup ‘A’
4. Pour 100mL of tap water & 100mL of vinegar into cup ‘B’
5.Pour 200mL of vinegar into cup ‘C’
6.Get an apple
7.Peal the skin off the apple
8.Cut it into 3 equal pieces that are 3cm wide, 3cm long & 1cm thick
9.Place one slice of the apple into each of the 3 solutions
10.Cover all three cups with a layer of cling wrap & leave them in a shaded spot for 7days
11. Construct a table like the one shown below
12.Record observations of the solutions on each apple everyday at a fixed time on table (eg. 10:00am everyday). Take into consideration especially the colour & texture of the apple

13. Take photo of solution when recoding observations & include it of recording table everyday
14.Repeat entire experiment two more times for reliability

SOME CONDITIONS APPLY....

MISS ZHANG HAS APPROVED MY IDEA!!!
BUT SOME CONDITIONS APPLY....
So apart from being very happy that I hv finally gotten the thumbs up....i need to change a couple of things.
Miss Zhang told me to only use one variable. So that's what I'm going to do!
I am going to only test the effect of the apple on a vinegar solution.
However, i'm going to test it on solutions of vinegar with varing amounts of acidity
In one cup I'm going to have just vinegar, and in the other 3 cups i'm going to increase the values of lemon juice at a constant rate to increase the percentage of acidity in each solution.
I researched the percentage of acid in vinegar and lemon. It turns out that vinegar is made up of 5% acid, while lemon is made of 5-6% acid.

*~*~*~*~*~*~*~*~*~*~*~*

RESEARCH

Vinegar: (www.buzzle.com/articles/vinegar-ph-of-vinegar.html)
...The pH of vinegar depends upon how much acid is present in it. The most commercial distilled white vinegars contain 5% acetic acid and so have a pH value that is somewhere between 2.40 - 3.40....


Lemon: (http://www.herbs2000.com/herbs/herbs_lemon.htm)
...Citric acid also makes up about five to six per cent of the juice and tissues of lemons and limes, this percentage is very high compared to oranges at about one to one and a half percent, or the grapefruit, at about one to two percent citric acid...


I also researched the pH of a substance is determined...
(www.chem4kids.com/files/react_acidbase.html)
That pH scale we talked about is actually a measure of the number of H+ ions in a solution. If there are a lot of H+ ions, the pH is very low. If there are a lot of OH- ions, that means the number of H+ ions is very low, so the pH is high. Think about it for a second. Why would a liquid with high levels of NaOH be dangerous and very basic? The Na-OH bond breaks in solution and you have sodium ions (+) and hydroxide ions (-). The sodium ions don't really pose a danger in solution, but there are a huge number of hydroxide ions in solution compared to the hydrogen ions. All of those excess OH- ions make the pH super-high and the solution will readily react with many compounds. The same thing happens on a less dangerous scale when you add baking soda to water. OH- ions are released in the solution. The numbers of OH- are greater than the H+ and the pH decreases.

I also researched the enzymatic browning reaction of cut apples....(http://www.curriculumsupport.education.nsw.gov.au/secondary/science/assets/aifst/Experiments/apple_browning.pdf)
When fruits or vegetables are peeled or cut, enzymes contained in the plant cells are released. In the presence of oxygen from the air, the enzyme phenolase catalyses one step in the biochemical conversion of plant phenolic compounds to form brown pigments known as melanins. This reaction, called enzymatic browning, occurs readily at warm temperatures when the pH is between 5.0 and 7.0.

*~ *~*~*~*~*~*~*~*~*~*~*

I found AMMONIA...@woolies!?

it was THE most unbelievable find ever!
u c...i was just leisurely walking through the detergents aisle scanning my eyes across all the different types of detergents and i saw a label with "AMMONIA" on it! It took a while for me to digest wat my eyes were reading, but then it finally clicked and I stood there starring at it with a " :O" face for 5yrs before i picked it up.
lyk wat the hell? I wasn't even looking for it and fate brought us two together :)
so there you go! If you want ammonia look no further than Woolworths the fresh food people ;)
finally realising how much fun blogging actually is,
Lakshmi
PS: I just need to keep reminding myself that Miss Zhang actually hasn't said yes or no to this idea yet. Maybe I should just wait for her approval....but then again she can't possibly disapprove of it...right?

Here's my climate graph...

ain't it just beautiful ;)

With only 4more days (including 2day) til school,

Lakshmi

finding AMMONIA is lyk trying to find a 4 leaf clover

I want to use Ammonia as one of my base substances....only thing is I can't find it anywhere. If anyone knows where to get Ammonia could they let me know?
LAKSHMI TO AMMONIA: Ammonia, Ammonia where for art thou Ammonia?
...*sigh*

Dear miss zhang, if you are reading this can you please approve it?

My awesum experiment was rejected....but now I'm a new person
Well...after much thought and hard, deep thinking by my cerebrum I have cum up with an even cooler idea than my last one!
This is my idea...
To test the effects of Acids and Bases on the Browning of Apples
i'm going to a cube of apple into each of the following solutions and see if acids or bases preserve apples more.
For my Acids I'm going to use:
-vinegar
-lemon
-tea (concentrated)
For my Bases I'm going to use:
-Baking Soda
-Ammonia
-Egg whites
I'm also going to put one in water to see the affect a neutral has on the apple.
I'm going to leave them over a couple of days and see the results.
I've also looked up some infomation on acids and bases
I found this website that said that acids would preserve them more and so i'm going to make my hypothesis:
'If the acidity of a substance is increased then the browning of the apple is decreased'

hehehe
some is finally getting somewhere,
Lakshmi
PS: ohmygod damn it....does miss zhang need to approve this?
PSS: Dear miss zhang, if you are reading this can you please approve it?

SUGAR!!

K girls I think I’ve got it! You see I was eating this really nice chocolate donut (from the awesumly awesum bakery at Coles-seriously it is really AWESUMMMMMM) n apart from thinking, this is all going straight to my thighs….I thought SRP!
So I think I’m going to do how and if sugar affects our memory. It’s actually something that I’ve always thought about. I mean you know how athletes eat glucose before they run to stimulate their body n stuff….we’ll does eating sugar stimulate the memory power of your brain?
What I’m going to do is….
Get about 5 people from the ages 14-16 and test their memory by showing them flashcards with numbers on them; each time making the number bigger by one digit. Then I will give them a certain amount of sugar, let it digest….and then do the same thing again but with different number flashcards! If they remember more, it means that sugar increases the power of memory!I might also try it with another, much older age group…not sure yet.
My variables
Independent: Sugar
Dependent: Amount of digits that person remembers
Controlled: Amount of sugar, time for digestion, age group of people, time of day

Hehehehe…finally getting somewhere,
Lakshmi :D
PS: I have decided to never use red font ever again, don't know about you but it's really hurting my eyes

Today I had a dulux moment…

So I sat down to study and somehow got immediately distracted...sigh. More to that point I sat there staring out the window and saw the black roof of my neighbour's house. And then I thought SRP!
So I have another idea...
We all know that black absorbs more light than white right? (hehe that rhymes :D) But do we know the temperature difference between a black thing and a white thing? So I thought for my experiment I should do get cups of water and dye each cup with a different colour and measure the temperature difference of each over a period of time.
So....
Cup A: black water
Cup B: red water
Cup C: blue water
Cup D: yellow water
Cup E: white water
And then after say about a couple of hours, measure their temperatures
My Variables:
Independent - Colour of Dye
Dependent - Temperature of the water
Controlled - Amount of water, amount of dye, type of cup, amount of sunlight & amount of water in cup

with still plenty more SRPing to do
Lakshmi

Lakshmi has had her first spark of science!

Well….yesterday night I was getting ready to go to sleep when I thought SRP! And then I came up with an idea for my project. I was thinking that I could monitor if the last thing that you hear before you sleep is the first thing that you think of in the morning. So… for example if I listen to a song before I go to sleep, will the same song be in my head the next morning? I don’t know it’s something that I’ve always thought about.
You know when you wake up one morning n you have this song in your head n your lyk, “where the hell did this song come from?” N then you realise that you were listening to it the night before?...
Well I always hv heaps of those moments n its about time I c if its true. Cos if it is….I could jst study something that’s really hard, just before I go to sleep the night b4 a test, n it’ll stay in my mind the next morning! Lyk how convenient would that b? I could revolutionise studying forever….
I’m not really sure what the independent & dependent variables would be…..i hv to kinda think about that a little more, but so far so good!

with lots more thinking to do but enough for today,
Lakshmi

Jeee...time flies when ur not thinking about science

Yesterday I was in my zhangy period of the wk when i realised that i had given absolutely no thought to my SRP, it was also when I realised that all I had on my blog was 'Hello World', in fact it was also when I realised that our first blog thingo is due next week...to the day.
So I have finally decided that maybe now is the right time to start this assignment.......
I am going to start thinking right now....
...
...
...
Jee this is harder than I thought. Maybe I should play some tetris........that's it because I haven't had any ideas as such I think i'm going to play some tetris to inspire my scientific side :)
Hopefully i'll be back in 5 with some awesumful ideas

Hello World