2007-01-30 09:47:41 · 4 answers · asked by Tracey Lee ♥ 2 in Science & Mathematics ➔ Chemistry
Why is an iron bar cold to the touch, and wood not ?
It depends of the thermal conductivity of the compound.
Higher is the thermal conductivity and faster it will chill your hand and you will feel it "cold".
2007-01-30 09:53:24 · answer #1 · answered by scientific_boy3434 5 · 0⤊ 0⤋
I've never tried to touch potassium sulfate. If you feel cold when you touch it is becaue it dissolves in the water of your hand and the reaction is endothermic, that's why you feel cold. Some salts absorb energy when they dissolve in water and you can feel the beaker is cool.
2007-01-30 20:30:22 · answer #2 · answered by Anonymous · 0⤊ 0⤋
K2SO4? - is NOT cold to the touch!
It is a solid at room temperature with melting point of 1069 degress C.
ref
http://en.wikipedia.org/wiki/Potassium_sulfate
2007-01-30 17:56:34 · answer #3 · answered by Dr Dave P 7 · 0⤊ 0⤋
general answer... it's more dense.
That's why if you say something like, a block of metal and a block of would were sitting in a room for a week. Which one is colder?
Most say metal, 'cos of it's density. But... they're both at room temp.
2007-01-30 17:52:51 · answer #4 · answered by brothergoosetg 4 · 0⤊ 1⤋