No system is completely closed off from its surroundings. Which represents a system that is almost completely closed?

A.
a capped soda bottle

B.
a washing machine

C.
a pot of boiling water

D.
a wood-burning fireplace

Question

No system is completely closed off from its surroundings. Which represents a system that is almost completely closed? 	
	
 
A.
	a capped soda bottle
	
 
B.
	a washing machine
	
 
C.
	a pot of boiling water
	
 
D.
	a wood-burning fireplace

jeffbever3221 · Answer

I think it's A, but i'm not sure.

anonymous · Answer

It is A. a capped soda bottle hasn't been introduced to regular air. everything else has been. a wood burning fireplace needs oxygen to work, a pot of water is exposed to air, and you open a washing machine to put clothes in.

harvey03 · Answer

A, there is almost no way of air escaping. For example, Cola and Mentos!