Achange in the color of a solution is a sign that
a) a chemical change is taking place
b) oxygen is present
c) a physical change has just occurred
d) organic chemicals are present

Option A) a chemical change is taking place.

Although there are exceptions, you will find in any introductory text about changes of matters that the change in color is a sign that a chemical reaction has occurred.

(C)A physical change has just occurred

Ithe undersigned only for use your own email and delete any and copies and of the itself and to be there is a good timewhat does a decrease in temperature indicate about the molecules in a sample of liquid water? decreased chemical energy of the moleculesdecreased kinetic energy of the moleculesincreased chemical energy of the moleculesincreased kinetic energy of the moleculeshow does a sample of helium at 15 â°c compare to a sample of helium at 215 k? the helium at 15 â°c has a higher average kinetic energy than the sample at 215 k.the helium at 15 â°c has lower nuclear energy than the sample at 215 k.the helium at 15 â°c has slower-moving atoms than the sample at 215 k.the helium at 15 â°c has smaller atoms than the sample at 215 k.