system and surroundings  [ENDORSED]

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Lindsay H 2B
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system and surroundings

Postby Lindsay H 2B » Wed Jan 17, 2018 4:33 pm

question 8.19 has to do with heating up a copper kettle in order to heat up the water inside. In this situation, is the kettle considered part of the system or the surroundings?

Michelle Nguyen 2L
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Joined: Fri Sep 29, 2017 7:03 am

Re: system and surroundings  [ENDORSED]

Postby Michelle Nguyen 2L » Wed Jan 17, 2018 5:04 pm

Since we are being asked to calculate the amount of heat that must be added to the kettle (containing water), I would consider it as part of the system, the whole system being kettle+water

William Satyadi 2A
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Joined: Sat Jul 22, 2017 3:00 am

Re: system and surroundings

Postby William Satyadi 2A » Wed Jan 17, 2018 5:06 pm

I agree with Michelle, since we are supplying heat to a copper kettle, we are adding heat to our system, not to our surroundings. I don't think it counts as a system, but rather the boundary of the outer boundary of the system.

Janine Chan 2K
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Re: system and surroundings

Postby Janine Chan 2K » Wed Jan 17, 2018 8:56 pm

The kettle should be part of the system, which is why the kettle is included when calculating the heat that must be supplied. I guess if you think about it, the kettle must be heated first before the water can be heated.

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