Ice floats on water. For most other substances, however, the solid sinks in the liquid. Classify each of these statements based on whether they describe water or most other substances.

A) In a phase diagram the solid-liquid coexistance line has a negative slope. B) In a phase diagram the solid-liquid coexistance line has a positive slope. C) The solid is more dense than the liquid. D) The solid is less dense than the liquid. E) The molecules are closest in the solid phase. F) The molecules are closest in the liquid phase. G) High pressure will cause the solid to become liquid. H) High pressure will cause the solid to become liquid.

For options G and H; G) High pressure will cause the solid to become liquid.H) High pressure will cause the solid to become liquid.

One of them ought to read 'High pressure will cause the liquid to become solid.'

I believe it is a typographical error.

See explanation for details.

Explanation:

For water, the following are true:

In a phase diagram the solid-liquid coexistance line has a negative slope.

The solid is less dense than the liquid.

The molecules are closest in the liquid phase.

High pressure will cause the solid to become liquid

For other substances, the following are true:

In a phase diagram the solid-liquid coexistance line has a positive slope

The solid is more dense than the liquid

High pressure will cause the liquid to become solid

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.