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Electrons.. The atoms in the object (depending on the density) speed up when heated. Gas heats faster than liquid, liquid heats faster than solid.
nothing
Normally, it heats up.
heats up
it heats up
The density decreases.
Electrons.. The atoms in the object (depending on the density) speed up when heated. Gas heats faster than liquid, liquid heats faster than solid.
What do you think happens when some air heats up and other air is cool?
"It" heats up,unless you were talking about that.
nothing
it heats up
It heats up
Remains constant Although the space it takes up might change
it heats up
Normally, it heats up.
heats up
it heats up