Read the following passage and please help answer some of the
questions below...if possible. :)
A microwave oven uses microwaves to heat
food. Microwaves are radio waves. In
the case of microwave ovens, the commonly used radio wave frequency
is roughly 2,500 megahertz (2.5 gigahertz). Radio waves in this
frequency range have an interesting property: they are absorbed by
water, fats and sugars. When they are absorbed they are converted
directly into atomic motion -- heat. Microwaves in this frequency
range have another interesting property: they are not absorbed by
most plastics, glass or ceramics. Metal reflects microwaves, which
is why metal pans do not work well in a microwave oven.
http://www.howstuffworks.com/microwave.htm/printable
In molecular terms, explain how does the microwave oven cause
food to get heated?
John wanted to heat up some frozen instant food. He had
forgotten to remove the food from the packaging and moments later
he heard a loud sound of plastic bursting open in the oven.Explain
why the plastic would burst in the oven
Just need a rough idea on how to work this out. Your help is
greatly appreciated
