science question ?? why does ***
 

I'm doing a school science project with my son and we are putting 4 different metals in 4 different liquids and tracking the effects over 5 days. Only one metal and liquid is reacting in a way we didn't expect ..maybe someone can tell me why? (to lazy to do the research)

we put Galvanized Steel in Vinegar .. right from day one it started to produce a gas in the form of bubbles on the metal .. now on day 5 it's not bubbling but the Vinegar is dark red and has slime on top ... the Galvanized Steel does not appear to be rusted but just dull.

we had no changes to the metal in fresh water /salt water or oil ... anyone know what the Chem. reaction is from ..is it the Zinc or what?

google it

Galvanized steel is covered in zinc. Zinc reacts with the vinegar producing hydrogen gas.

That's what i figured .. I recalled something like that in like 5th grade ..:1orglaugh ... the first 2 days it produced a good amount of Hydrogen and you could smell it .. then it seemed to stop producing the gas and just got dark red really fast ... pretty cool

I just looked it up and found this fun little trick I'll do with my son

1. Clean a penny: place a penny in vinegar--becomes shiny as oxide on

surface reacts with acid and dissolves.

2. To show that copper is in the solution from #1, put 50 pennies in a cup

of vinegar and let stand all day or overnight. The next day, place iron

nail in solution. Iron metal reacts with copper ions in solution--copper

metal appears on nail.

How do you use zinc to make signups?

:1orglaugh I offer a Galvanized Happy coin with each sign up to the surfer ..

:1orglaugh :1orglaugh :1orglaugh :1orglaugh

How do you use zinc to make signups?
:1orglaugh

:1orglaugh

Just beware of surfers with those $3 coins.

heh, is this a good time to mention i was a biochemistry major in college? :frenchman

hear hear

Here's one for you.
Two peices of galvanised metal in a sealed beaker, with a tube going to a ballon.

Have the beaker half filled w/ salty warm water.

Place a decent current through the water.

You'll collect hydrogen in your balloon. I used to do this as a kid, every weekendit was like a mini hindenburg disaster, lol.

you are all NERDS

Have you ever heard of google?

No ..please explain ...and did you miss the part in the first post when I said (to lazy to do the research):winkwink:

Ask Mr. Wizard.

http://www.patheticpersonals.com/ima...rencelever.JPG

Hows the project comin along partner?

going well ... it was a busy weekend .. lots of family over .. I'm pretty shot .. looking to hit the bed early ...

How was your Friday night festivities ...:winkwink:

Excelent you got a minute to talk? need to go over some final things with you before i put the word out.

yep... i remember doing that exact science project somewhere around 4th or 5th grade.
I believe we also used Coca Cola as one of the liquids.

i'll call you in 10 min..

thats great idea...

:1orglaugh

Hey no secrets here on GFY (Mikey and Pete)........LOL

this is what this fucking project looked like when we finished ... keep in mind he in 3rd grade and we took 4 metals and put them in 5 liquids for 5 days and took pics every day and made a journal ... it wasn't easy getting all the pics on the board ..plus i had to crop and title each pic in photoshop. then cut each one out ... it took me 5 hours to put together ..my son stuck it out for 2 and had to go to bed ...:helpme
let me ad there will be no grade on this ...it's just a science fair and everyone gets a ribbon for participation .... :disgust

http://www.thevegabros.com/project002.jpg

that's a very nice science project you did. congrats to you and your son.:thumbsup

little bit rusty ( forgiver the pun) but do have a medical science degree.

from memory Vinegar contains Acetic Acid in low quantities and water.
Galvanised Iron, contains a Zinc coating. Acetic Acid in the form of say 3% Acetic acid acts as a descaling agent on the Zinc coating, and corrodes the Zinc away.

:thumbsup :thumbsup

You realize that since 1983 that pennies are 97.5% ZINC.

Evidently the Romans used simple solutions like that to copper-plate their iron nails in their ship building.

Wishing all the best to your son's science fair.

That's a good way of bonding with your kids, school work. Aside from helping them at the same time you have the chance to learn new things.

this is why kids shouldn't be allowed to do science :1orglaugh

I will try this ... it said on the worksheet in big BOLD letters Can Not Contain anything Flammable ...:1orglaugh

:1orglaugh :1orglaugh :thumbsup

this thread is really nice!!!