just one of the science holiday homework we had to do:

so this is the climate graph for 'Weather for Sydney'
(click for a larger image)

the result of an hour of excel and cutting and pasting on paint ..and saving

METHOD:
aim:
to determine what type of solution best protects egg shells from acids

hypothesis:
the solution that contains the most amount of sodium, will protect egg shells from acids, the best

risk assessment:
method:
1. collect a dozen eggs (uncooked), 140mls of coke, lemonade and fanta, containers (8) and three lots of 140mls of Listerine, toothpaste and water in ratio 1:13 , salted water in ratio 2:5 and tap water
2. take a picture of the first 4 eggs(for colour reference- at the end)- note remember which egg is which
3. fill up 4 containers of one 'lot' of solvents (Listerine, toothpaste compound, salt water and tap water)
4. soak the eggs (4) in the solvents for 3 days
5. pick up the eggs slowly, placing them on a stand to dry. note: do not wipe them dry
6. place the eggs in separate containers of coke and leave aside for 2 day
7. pick up the eggs and, with a towel,lightly dry them, then scrub clean.
8. observe the eggs- what is the colour difference compared to the matching photo taken in step 2
9. record the results in a table
10. repeat steps 2-9 for the rest of the eggs,this time placing them in lemonade and fanta instead of coke

results:

conclusion:
--



note:
~ i think my aim and hypothesis makes sense...
might have to do a bit more research
~ i couldn't really assess more risks because my experiment isn't dangerous. so i just have one :)
~ because i have written a method in blog 5 without a clear idea as to the amount of liquids used or the amount of days the eggs can be left in the containers, i have changed a few things from that method to make the one above- the amounts of liquids (volume), ratios and days have been changed to conduct this experiment more easily and to suit the containers and how much (grams/ milligrams) of the materials i have bought
~ with my results, i found a colour wheel/chart thing that shows a variety of colours and different shades in that form. so i will be using that to differentiate the colour before and after the experiment. whether the colour change is lighter or darker depends on whether the number on the colour wheel/chart is greater than or less than the previous one.
~ the conclusion (obviously) has not been written up yet because the experiment has not yet been conducted.

...hope that all made sense


now that that's all done, i shall start my experiment
if any problems shall arise, I'll be sure to let you know
wish me luck
..i hope this all goes well and that i don't make any mistakes :)

RESEARCH:

so we all know that egg shells are similar to our teeth. But why is that so and how can we keep them cleaner and stronger?

here, i have some information on
- the relationship between teeth and eggshells
- forms of cleaning and whitening teeth
- tooth enamel

LINKS:

http://en.wikipedia.org/wiki/Tooth_enamel

http://www.ehow.com/how_2109174_prevent-tooth-enamel-decay.html

http://www.webmd.com/oral-health/tooth-enamel-erosion-restoration

http://www.dentalgentlecare.com/tooth_decay.htm

http://www.tipking.co.uk/Beauty_tips/Face/Whiter_teeth/

http://www.answerbag.com/q_view/1961904

We went shopping the other day and i managed to get everything i need for the experiment. Overall, i spent approximately $20 on all the materials (which i think is a bargain)



This includes:
lemonade (lido lemonade), coke (la ice cola), fanta (crush orange), 'Listerine' fresh burst antiseptic mouthwash, 'Home Brand' table salt, 'Colgate' cavity protection toothpaste, 'Naturally Grown' eggs and container cups

well today we finally got our marks back
and the teacher has approved of all my experiments (YAY!!)
all i need to do now is choose one...

my good friend, libs has told me that now that our experiment is approved of, we are to conduct it during the holidays

so, i will be performing
experiment no. 4:
what type of solution best protects egg shells from acids

and i will need to collect the following materials:

- Eggs
- Containers
- Coke
- Lemonade
- Fanta
- Listerine
- Toothpaste
- Salt

but i will not be conducing the experiment until all the research is done
this, i predict, will take a long time...

happy holidays everyone!!!