Cheese_Muffin_Man wrote:Skink wrote:Cheese_Muffin_Man wrote:can someone tell me the difference between zinc and aluminum?
The flow chart and tables say that one will react quickly with HCl while the other is delayed. I can't tell you wha that looks like in practice because I don't have these samples, but I'd try it at least once if you can.
Yeah, we tried this one so many times at practice (the 6th graders...they never get used to it).
For aluminum, there is definitely a delay between contact and reaction. You have to wait like a whole minute to about 2 minutes before something happens. When it does start to react, there will be a slight fizz followed up by a pretty violent bubbling that lasts for about 10-20 seconds.
Zinc, on the other hand, will react upon contact with HCl by fizzing at a realtively constant magnitude. It won't be anything very violent, just some moderate fizzing.
Also, there may be some confusion between magnesium and zinc. While zinc has a moderate fizz on contact, magnesium will practically evaporate on contact and bubble violently if a piece is dropped into a fair amount of HCl. You'll see what I mean if you ever get to try it.
Hope that helps.