Crude oil is a mixture of many liquids. The crude oil enters the bottom of a tall column, where the mixture is heated. The substances rise up the column until they cool down and condense back to liquids. The components of crude oil can be separated because of differences in which property? density magnetism boiling point physical state

i believe it is c.) 1575 j.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

i think is conclusions.i think so