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Chemistry 18 Online
OpenStudy (anonymous):

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OpenStudy (nincompoop):

what does that reaction mean?

OpenStudy (anonymous):

my computer is frozen- trying to answer you

OpenStudy (anonymous):

The oxygen is mixed with the magnesium

OpenStudy (anonymous):

and would make it endothermic???

OpenStudy (anonymous):

because the magnesium is becoming warmer and will eventually burn completely???

OpenStudy (nincompoop):

what does endothermic mean?

OpenStudy (anonymous):

when heat is formed and energy is created?

OpenStudy (nincompoop):

thinking that if it is an endothermic, what are the consequences?

OpenStudy (anonymous):

I must be way off. I apologize. I thought I understaood it.

OpenStudy (nincompoop):

http://www.youtube.com/watch?v=5RJLvQXce4A watch this short video, which is an example of an endothermic reaction

OpenStudy (anonymous):

would the heat be absorbed as a consequence/

OpenStudy (anonymous):

Okay I will watch it. Thank you.

OpenStudy (anonymous):

It was cold instead of hot (endothermic) but I don't understand. In a previous lesson of mine, it said that if we warm ourselves with an electric blanket, it would be endothermal. This would mean heat, not cold.

OpenStudy (anonymous):

* endothermic (not endothermal)

OpenStudy (nincompoop):

this guy is really good at making things easy to understand http://www.youtube.com/watch?v=8m_FCe5aCqY so you are correct, endothermic means it absorbs heat (endo - within or in) exothermic (exo - outside) so when you see a +△H it means it is has absorbed heat and -△H means it has released heat

OpenStudy (anonymous):

So I had it backwards. It would be negative (releasing heat) - B

OpenStudy (anonymous):

because the magnesium would in fact be releasing heat as it burns ????

OpenStudy (nincompoop):

so what do you think is the answer?

OpenStudy (nincompoop):

endothermic = absorbs = +△H

OpenStudy (anonymous):

so release would be -△H ??

OpenStudy (nincompoop):

yeahhhh when you take out money (think of it as heat), you are deducting it from your pocket

OpenStudy (anonymous):

That makes sense- thank you so much

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