About 100°C heat can cause it to melt(which is a physical change)
Heating the solid piece of sodium metal can cause a physical change by melting it into a liquid. Cooling the liquid sodium back to its solid state would also be a physical change.
Pounding a gold coin into a different shape would probably not effect a chemical change. If, however, the pounding produced enough heat to meal the coin, some chemical change could take place.
It would be a physical change because you are changing the shape of the wood not the chemical composition of the wood. However, you could possibly create a chemical change if you could hammer hard and long enough to burn the wood. Not likely, but it is possible.
Yes. The way I think about it is if you can change it back (in this case, you could filter the epsom salt out, or evaporate the water, drying it) then it is a physical change.
It is a physical change because paper is still paper and its the same even if it has been cut. If the paper were say to get burned it would be chemical change because it is no longer paper and it has a different form.
Heating the solid piece of sodium metal can cause a physical change by melting it into a liquid. Cooling the liquid sodium back to its solid state would also be a physical change.
The chemical formula of sodium chloride is not changed by dissolution.
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Yes. Physical changes only cause a substance to change in the appearance. You could measure if it grew in size, if it changed color, the amount of components the substance now contains after the physical change
Well it could either be a physical change OR a chemical change. .
Freezing it should only be a physical (not chemical) change. cutting it in half
cut it
It is a chemical change because you cannot not make the smell go away, if you could it would be a physical change
loss of sodium and chloride and water in the feces
It could be implantation bleeding or it could be cause of may thing stress weight change. Also stress. Spermicides can also cause allergic reaction. So if in doubtful go to your doctor for full physical examination. Good luck.
It is a physical change because when salt is added to water,it is dissolved in it which only changes its physical appearance.
A physical change in a tennis ball could be flattening or deformation from being hit or squeezed. Another physical change could be discoloration or fading of the ball's outer fabric due to exposure to sunlight or wear and tear.