Draw the line-angle structure for the given condensed structure, and map the carbon atoms in the condensed structure to the skeletal structure. Condensed structure for 2-bromo-3-ethylpentane numbering the carbon atoms from 1 to 5 starting with carbon 1.

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?