Science



☒ Not achieved ☑Achieved☑☑Advanced
 * Science Fair Marking Term 2 2011**

☑Clear aim/hypothesis carried through ☑Method, accurate experimentation ☑Accurate experimentation, controls, variables, repetitions ☑Results clear, accurate, include appropriate data ☑Conclusions are in line with aim/hypothesis ☑Results are interpreted and discussed (conclusion)
 * Scientific Process and Background:**

☑Design of the experiment ☑Use of apparatus and materials
 * Technical Skill:**

☑Imaginative/creative ideas ☑New/Unusual application in science
 * Originality:**

☑Colour/form/clarity/graphics ☑Innovative appeal
 * Presentation of Display:**

☒Authentic ongoing record with raw data included ☑Has supporting documentation, bibliography, acknowledgements
 * Log Book:**

Thank you Taylor. You have completed a good Science Fair following the correct Science procedure (I'm not in any hurry to drink Coke or Pepsi now that I have seen your results). It was good that you included some research into why you think the coins became shiny, it is amazing that an acid used to remove rust can be included in our food!
 * Teacher Comment:**

I thought for my science fair I did alright. I could have done better I think but it was alright.
 * Student Comment:**

**Good start to science fair, start your experiment as soon as possible. You can record each of your observations by taking photos this will add support to your** **experiment.**

__Thursday 26 May 2011__

Conclusion

My Hypothesis ended up being wrong because I thought that Pepsi would be the one that would rot your teeth the fastest. But that proved to be wrong because Coca-Cola Zero was the fastest but after that it was Pepsi that was second. Then finally lastly it was Coca-Cola normal. I did my tests over 6 hours and ever 2 hours I checked them to see what coins were going shiniest the fastest. At 2 hours it was Coca-Cola Zero that was making the coin go shiny the fastest then secondly it was Pepsi then finally Coca-Cola. At 4 hours and 6 hours it was the same results. So altogether my Hypothesis was wrong.

__Monday 23 May__

Explanation:

My three different types of coke that I chose were: Pepsi, Coca-Cola and Coca-Cola Zero. In my hypothesis I thought that Pepsi would make the 10c coin go the shiniest the quickest. My hypothesis was wrong because I found out that over 6 hours Coca-Cola Zero makes the coin go shiniest the fastest. Although Coca-Cola Zero the healthiest one with zero calories it would rot your teeth the fastest. I have proven this by doing a test over 6 hours and I checked every 2 hours I did this twice to make sure. The second one was Pepsi, I thought this was going to be the fastest one but it wasn’t it was second. So Coca-Cola was the one that is best for your teeth out of the three cokes. It might not be the healthiest but it is the one that is the best of the three for your teeth. Coke is not good for your teeth though but if you were going to get one of the three and you wanted the one that wont rot your teeth as much it would be better to have the normal Coca-Cola.

Using a coin works to prove what would rot your teeth the most because the acid in the coke makes the coin go shiny and take the dirt off or whatever is on it. This acid is what wrecks your teeth so Coca-Cola Zero is what wrecks your teeth the most because it made the coin go the shiniest fastest. I did do the tests twice to make sure that they both ended up with the same result.

I think that the reason why Coca-Cola Zero was the one that would rot your teeth fastest is because it has food acid 338 (Phosphoric Acid) which removes rust! Also there is food acid 331 (Sodium Citrates) which is also used in photography and as an anticoagulant of blood stored for transfusion. These two acids would be able to rot your teeth very fast and easily.

**Science Fair 2011**

Acid in coke.

Introduction:

For my Science Fair this year I am going to get 3 cups of different brands of coke, Home Brand, Pam's, Coca-Cola. I am then going to put a $1 coin in each cup and see which one goes shiniest the fastest cause that will prove which coke has the most acid in.

Aim:

My aim is to find out what coke brand has the most acid in it by putting a 1 dollar coin in a glass of coke and see what one goes shiniest the fastest. This will prove what coke brand will wreck your teeth the fastest because f the acid in the coke.

Hypothesis:

I think that Pam’s will be the quickest brand of coke to make the coin shiny. I think this because it is a cheap type that I think would have the most acid to make your coin go shiny. I think that the Coca-Cola brand of coke will take the longest because I think that it will have the least amount of acid to make the coin shiny. Method:

Equipment:


 * 1) 3 different brands of Coke: Home brand, Pam’s, Coca-Cola.
 * 2) 3 different glasses to put the coke in.
 * 3) 3 1 Dollar coins to put into the coke.


 * 1) First I am going to get 3 different brands of coke. Coco-Cola, Home Brand, Pam’s Coke.
 * 2) I will full up 3 different glasses with the 3 different Coke brands.
 * 3) Then after that I will put a 1 dollar coin in the 3 different glasses of Coke.
 * 4) After 1 day I am going to go and see which 1 dollar coin has gone the shiniest from the acid.
 * 5) I will keep this up for a few days and then see at the end which one is the shiniest at the end.

<span style="color: #2f35dd; font: normal normal normal 13px/normal Arial; letter-spacing: 0px; line-height: 19px; margin: 0px;">**//Taylor I can not proof read & edit work that is not here! 10.05.2011//**