Astudent is investigating the affect of different salts on melting points. four patches of ice of equal size are roped off and a different type of salt is
poured on each, one receives table salt (nacl), one receives calcium chloride (cacl2), one receives potassium carbonate (kco3) and the fourth
receives inert sand instead. each patch receives an equal amount of salt or sand. the student measures the volume of ice remaining and subtracts
it from the original volume of ice to see how much melted away. what is the dependent variable?
• o a. the ice that received sand.
. b. the amount of ice that melted.
• c. the size of the ice patches.
• d. the type of salt applied to the ice.