[Aurel]

Hey,
A few days ago in chemistry class, we did an experiment with HCI, Aluminium foil and a bit of copper sulfate.
Here is a video showcasing it: https://youtu.be/n4W-3UgN_Hg
I'm new to chemistry and different experiments, but I've always thought that experiments are done to prove something. But in our experiment I am not sure what it proved, maybe besides proving that there is an oxide layer surrounding the foil, thus creating hydrogen when coming into contact with the acid. Is there anything else that is proven, or am I missing something? Perhaps something in the colour of the flames?

I believe that this is the chemical equation for the experiment, but if it is incorrect, feel free to correct it:
2Al(s) + 6HCl(aq) → 2AlCl₃(aq) + 3H₂(g).)

I hope my question was comprehensible, and I would love to elaborate further if there are any questions.
Thanks for reading my post, and thanks in advance if you decide to answer it.

[billnotgatez]

Just an aside

... HCI  ... HCl(aq)  ...

capital "I" and lower case "l" are not the same

typos are always a problem

[billnotgatez]

I thought this was an interesting discussion
https://towardsdatascience.com/are-you-guilty-of-using-the-word-experiment-incorrectly-9068baeab7a4

Are you guilty of using the word “experiment” incorrectly?

[Aurel]

Hey billnontgatez,
sorry, English isn't my primary language. In my country, we say (of course translated) experiment. What would the correct word be? And sorry, I mistook it for a "l". Thanks for letting me know!

[Orcio_87]

I believe that this is the chemical equation for the experiment, but if it is incorrect, feel free to correct it:
2Al(s) + 6HCl(aq) → 2AlCl₃(aq) + 3H₂(g).)

True, but Al also reduces Cu²⁺ to Cu, that is why solution loses its blue color.

[Borek]

I thought this was an interesting discussion

Are you guilty of using the word “experiment” incorrectly?

Ah, sure, statistician trying to tell us what they THINK we should do.

[billnotgatez]

@Aurel

Thank you for posting here.

I was hoping my post would start others to comment on what the word
experiment
means to them