Question

Which best explains why a wood-burning fireplace does not represent a closed system?

A.
because they can be used for cooking

B.
because a fire requires oxygen from the atmosphere to burn

C.
because they are not all made of brick

D.
because the ashes have to be swept away

Answer 1

@imqwerty

Answer 2

a closed system is the one in which the products after the reaction don't go away anywhere or we can say that the products do not disperse

and try

Answer 3

Either B or D then, right?

Answer 4

Because it does NOT represent a closed system. I think it doesn't... :/

Answer 5

option B is not an example of closed/open system its like a reason for this statement-> " wood-burning fireplace does not represent a closed system"

so why do u think that this reason is correct?

Answer 6

Rephrase this question this way:
Why is a fireplace an open system?

P.S
And do you know what a closed system is?

Answer 7

Because it does "Not" Represent a closed system. The question is asking, "Which does 'not' represent a closed system?"

Answer 8

I do but I didn't pay attention much when my teacher was teaching this.

Answer 9

question-> Which best \(\color{red}{explains}\) why a wood-burning fireplace does not represent a closed system?

Answer 10

Ohhhh yeah... Let me read the options again, hold up.

Answer 11

okay =]

Answer 12

Is it A? :P

Answer 13

why? :)

Answer 14

Because closed systems means the transfer of energy, but not of mass, in a system.

Answer 15

yes but how is that option relating to this logic

Answer 16

Or it's B...

Answer 17

Screw. It's B.

Answer 18

B because it represents an Open System.

Answer 19

So who to believe? One person says it's not B and the other person says it is B...

Answer 20

Scratch A. I mistaken it for something else. A flame needs oxygen atmosphere to burn. Yet the flame does not exchange any sort of matter with the oxygen around it. So it's B.

Answer 21

@imqwerty, you agree?

Answer 22

yeah i agree :)