Introductory Chemistry

Steven S. Zumdahl, Donald J. DeCoste

Chapter 14 Liquids and Solids - all with Video Answers

Educators

Section 1

Water and Its Phase Changes

01:22

Problem 1

Gases have (higher/lower) densities than liquids or solids.

Carli Tucci

Numerade Educator

01:21

Problem 2

Liquids and solids are (more/less) compressible than are gases.

Carli Tucci

Numerade Educator

01:07

Problem 3

What evidence do we have that the solid form of water is less dense than the liquid form of water at its
freezing/melting point?

Carli Tucci

Numerade Educator

02:29

The enthalpy $(\Delta H)$ of vaporization of water is about seven times larger than water's enthalpy of fusion $(41 \mathrm{kJ} / \mathrm{mol} \text { versus } 6 \mathrm{kJ} / \mathrm{mol}) .$ What does this tell us about the relative similarities among the solid, liquid, and gaseous states of water?

Carli Tucci

Numerade Educator

01:09

Problem 5

Consider a sample of ice being heated from $-5^{\circ} \mathrm{C}$ to $+5^{\circ} \mathrm{C}$ . Describe on both a macroscopic and a microscopic basis what happens to the ice as the temperature reaches $0^{\circ} \mathrm{C}$ .

Carli Tucci

Numerade Educator

04:02

Problem 6

Sketch a heating/cooling curve for water, starting out at $-20^{\circ} \mathrm{C}$ and going up to $120^{\circ} \mathrm{C},$ applying heat to the sample at a constant rate. Mark on your sketch
the portions of the curve that represent the melting of the solid and the boiling of the liquid.

Carli Tucci

Numerade Educator

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6