Saturday
March 28, 2015

Homework Help: Chemistry

Posted by Joe on Saturday, September 9, 2006 at 9:53pm.

Are the following physical or chemical:
a. dew is dried by the sun
a dark cloth is faded by the sunlight
c. grape juice is converted to wine
d. soap is dissolved in water


a.physical
b.physical
c.chemical
d.chemical


Physical changes are those in which the substance is not changed. Chemical changes are those in which the substance is changed. For example, water boiling and turning into steam is a physical change. The water, in the liquid state, changed to vapor. It still is H2O. It changed states (liquid to vapor) but it did not change in composition. Now you go through your list. We shall be happy to check your answers if you wish.


a. physical
b.physical
c. chemical
d. chemical


Are the following physical or chemical:
a. dew is dried by the sun
a dark cloth is faded by the sunlight
c. grape juice is converted to wine
d. soap is dissolved in water


please explain why you think these are physical, physical, chemical, chemical.

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