Science Assignment

Results of visible corrosion (even though not in initial method)  (just for fun)
NOTE: there was no difference in the thickness of the copper- according to multimeter.

I've finished my second trial. And therefore have fully completed my experiment. Now...just have the report to do. The measurements of the copper after a week in the acid did not show and signs of corrosion, possibly due to the fact that the calipers were not a high enough accuracy, however on some of the liquid's copper there was some visual evidence of corrosion, for example the vinegar's copper strip, the part that is contained in the cup, but not submerged in the liquid turned green. The salt solution also showed signs of corrosion. The second trial's results were very similar to the first trial, which is good (shows CONSISTENCY). and halfway through my experiment my camera's 8gb's sd card ran out of space. :( (due to the fact that I took 500 pics of the Vivid fesitival, but most were blurry because I didn't use a tripod and it's really hard to take pics at night without a tripod because the shutter speed has to be reduced. :(. NEED TO start SRP booklet and finish report off, and finish corrosion report and to study for science. Also I used open office to do my SRP because the word is dead and I hate microsoft 2003 and my laptop is with Mr lenson.

gtg.. seeing as if I have sooo much science homework to do. I'll upload photos of the SRP sometime.. but not now. byee

Well, I went to Vivid Sydney yesterday night and I also did about 2 pages for my science SRP. I am also going to redo my experiment again tonight. Wish me luck!
oh yeahh.. i'm also going to get my laptop back tomorrow! never thought I could survive without it however I did. :).

Click to make it larger :).

Things I need to do this long weekend
- go to  Vivid Sydney
- Revise for Science Test
- Do SRP
- Do booklet for bonus marks
- Do Conidaris Science Report
- Maybe re-do experiment
- Read Dracula
- Watch Crude: the Journey of Oil
And thats all...
out of the 8 things, 6 of them are science :(.
Well remember how I said 2 weeks ago that that weekend was dedicated to science, well I've dedicated 3 of my weekends to science plus a public holiday and like 3 weeks of after school 2 hours on science.

Yayy! Post Number 50!!
Experimental errors

• human errors
• Not measuring the amount of sugar in the solution
• measurement errors
• salt from hands might affect experiment
• Equipment errors
• Multimeter and callipers might not be accurate
• stopwatch might be not accurate
• Experimental errors
• temperature might affect the experiment

That was all I could think of.... I'm really tired, coz I slept at 12:30 last night, so my brain is dead.. I'll have more in my report if I forget to do another post on this. Wanna ace science this year, however I don't think that will happen.

I have like used about 20 copper strips and like a huge block of zinc and heaps of food ingredients. :(. SRP is such a waste. Since I've already peeled the protective layer from the copper strips, they are basically going to oxidize and be no use. *sighs* Anyways, I might do my experiment again, if time allows. The second experiment was wayy more accurate, however want to do a re run of the experiment so to make is as accurate as possible.

About trial 2- i used a hot water bath (cup placed into a bucket of hot water) to heat the tea... I used a plastic cup, so I couldn't heat it very much. Also I tested nano pure water (found in the supermarket drinking water section) and demineralised water. demineralised water gave a lower voltage, so I used that one. It also said it was for laboratory solutions, I have no idea of what that is but it sounds like something you use in a science lab.

Also during the last trialed ingredient, my ipod battery ran out.. so I had to use a stopwatch.

I've done about a page of my SRP.. planning to use the Queens Birthday to do my SRP... I love public Holidays and holidays in general... also need to go and see vivid sydney.. wanna take some good pics of the opera house and museums... looks spectacular

Gotta love Pixillion Image Converter. It made life a whole lot easier by decreasing the size of my images. I used the canon eos 500D to take pictures, so the camera was like 15mp, therefore the size of the pictures were like 6-10mbs each. Pixillion made the images an average of 400kb!!! Wayyy easier to upload. :)

Found this very interesting optical illusion (even though it has nothing to do with my experiment, it is still sciency) :

What do you see a cat or a mouse??

hahaha
gtg... need to back up my files so to hand in my laptop to Mr Lenovo tomorro... so inconvenient. argh!

Equipment

Salt water 

Tartaric Acid

Vinegar


Sugar Water

Black Tea

Citric Acid

And here are the pH papers
I only measured the ones that had not been measured. I didn't have enough pH papers left. :(