You have a glass jar. You pour in water with a pitcher until it is half filled. You then seal the jar with an air-tight lid. (The only other thing in the jar is regular air). Assuming that the water in the jar is not already boiling after attaching the air-tight lid, how do you make the water boil?
boiling: the state in which liquid water is rapidly changing to water vapor (ie, the water is accually bubbling, not just steaming)
For clarification, the water is plain distilled H20. It is not heavy water, water with impurities, etc...
You cannot transfer or use anything that transfers light, heat, magnetic, electric, or chemical energy into the jar. (and no, shaking the jar till the water friction causes the water to boil does not work)
You cannot open or break the glass jar.
The area in the jar cannot increase or decrease. (You can try but the jar will not shrink, grow, or deform in any way)
You cannot insert anything into the water.
You must be able to conduct this experiment with easily attainable equipment, chemicals, and other materials. (ie, no radioactive chemicals, no superpowers, no multi-million dollar scientific equipment, you get my drift...)
(Note: although it is hard for it to succeed, you can conduct this experiment at home and get the water to boil without any special equipment.)
what is considered "easily attainable equipment, chemicals, and other materials"?
freon is easily attainable if you're a mechanic but not otherwise...
if you insert a hose into the lid is it "Air-tight"?
can it be done entirely at home?
there are 2 ways to "boil" water increase temp or decrease pressure. if the lid is "air tight you cannot remove air from the jar therefore cannot decrease pressure....and you cannot apply heat so......
can you fill the jar and seal it in a low pressure environment (ie south pole or high altitudes) then bring it to a high pressure environment (ie Sea level) and have the difference in pressure inside to that outside differ enough to result in boiling?????
too many unknowns
