When a substance has changed into something new or different so that the original substance is gone, as in digestion, radioactiv
e decay, or a battery in a flashlight producing light, it is known as a ______________________________. a.physical property
b.chemical property
c.physical change
d.chemical change
Physical change involves change which can be retrieved back . sugar is dissolved in water . It is physical change . because sugar can be retrieved by evaporating water.
burning of coal is a chemical change because the ash that we get after burning coal can not be turned into coal .
In the given case in the problem , after digestion , things that are formed are quite different . After radioactive decay new element is produced . In battery , current is produced after the chemical reaction which produces new products.
