why does aluminum foil not get hot when placed under a pizza and placed in oven at 450 degrees?

Answer 1

The surface of the foil reflects heat. It's thin mass and lack of density does not allow it to retain heat. Think of it this way: The air inside the oven, the foil, and the oven rack are all at 450 degrees. If you touch the rack you get burned. But the air does not burn you. Neither does the foil. Yet water at only 180 degrees does burn you. Heat is a form of energy. Just like electricity, it's ability and speed to move from one place to another is dependent on the type of conveyance available to it. Aluminum might be a good heat conductor, but foil is so thin it loses heat faster than it can conduct it.

Answer 2

Anything sitting in a hot oven tends to reach the same temperature as the oven. When the oven door opens, the aluminum foil is at the same 450 degrees as the oven. However, notice that the aluminum foil is very thin. There is very little actual aluminum and it is spread over a relatively large area (standard aluminum foil is about 0.0007 inches thick; heavy duty foil is about twice as thick). As a result cool air outside the oven cools the foil quickly when the oven door is opened and the pizza and foil are removed.
Also your fingers themselves have a lot more mass than the aluminum foil that they are in contact with so usually only the top surface of the skin would be heated when you touch the foil.

Answer 3

It gets to 450 degrees -- but because it is so thin it will give up it's heat rapidly when you remove it from the oven. Between the pan and the pizza where there is no air it will be quite hot.

Answer 4

Aluminum gets very hot. It is a heat conductor. Because of its thin size, it can cool quickly once removed from the oven

Answer 5

Aluminum Foil does get hot. Because it is made with metal alloys it heats very well. But, because aluminum foil is so thin, it can cool down very fast too.

Answer 6

Aluminum is a very good conductor of heat. It does get hot but cools quickly once removed from the heat.

Answer 7

These pans that come with the Lasagna already cooked in them are oven safe, but to ensure that the cheese and sauce don't bubble all over the bottom of your oven, I would put another pan underneath it to ensure the cleanliness of your oven, especially if you've never used this product before. I severely doubt a fire will ensue, unless you put paper in your oven and you set it on 500 degrees........just follow the exact cooking instructions and enjoy! Have a great weekend!

Answer 8

But it does! Only, the mass is so small, (it's thin), that the part that is not under food cool super quick.

Answer 9

probbly lo specific heat.
we lernd about it in fisics
water has hi specific heat, thats why it stays hot or cold a long time.
look up specific heat 4 alum n ull c

Answer 10

It is just made to withstand high heat. You can use it on a charcoal grill, too. And that is on straight fire.