[Fundz]

While burning magnesium (ribbon) what are some qualitative and quantitative observations before you burn it, while you burn it, and after you burn it.

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To show you I tried:

Before: Malleable, gray in color?, about 5 cm long, 3 mm thick.. don't know any more.

During: Very bright, smoke is released, don't know any more.

After: Loss shape, white in color, leaves ash on glass, don't know anymore..


Help? :confused:

[Borek]

Looks more or less OK to me. Does it burn cold, or hot?

[Fundz]

I am unsure. Unfortunately I merely observed the experiment, I didn't perform it.

[Borek]

How do you think? Whoever did the experiment, how did s/he held the magnesium?

[dabaichi]

You can observe the mass change of Mg for the reaction since when magnesium metal burns in air, the possible products are MgO and Mg3N2 solids which may result in a definite mass change.

[Fundz]

Based off the procedure I am fairly certain it was a hot one.

As far as calculating mass change it is something I've yet to learn, but maybe we will go over it and I'll be able to do it.

[Borek]

You can observe the mass change of Mg for the reaction since when magnesium metal burns in air, the possible products are MgO and Mg3N2 solids which may result in a definite mass change.

You can write about mass changes only if you have weighted substance before and after experiment. Doesn't look to me like it was done.