why do thicker lubricating oils have higher melting points? they have longer chains of carbons. higher…

why do thicker lubricating oils have higher melting points? they have longer chains of carbons. higher density always means higher melting point. unsaturated hydrocarbons have a higher density than saturated hydrocarbons. thicker oils are more solid than liquid, so they have another phase change to complete.

why do thicker lubricating oils have higher melting points? they have longer chains of carbons. higher density always means higher melting point. unsaturated hydrocarbons have a higher density than saturated hydrocarbons. thicker oils are more solid than liquid, so they have another phase change to complete.

Answer

Brief Explanations:

Lubricating oils are hydrocarbons. Thicker oils have longer - chain hydrocarbons. Longer carbon - chain molecules have stronger intermolecular forces (such as van der Waals forces). Stronger intermolecular forces require more energy to break, resulting in a higher melting point.

Answer:

They have longer chains of carbons.