The picture shows two liquid samples are poured into a beaker. as shown, the liquids don’t mix with each other. which statement is true? a) sample a has greater density. b) sample b has greater density. c) the densities are the same because the volumes are the same. d)the densities are different because the volumes are different.

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.