e8.1 Think About It
See the pattern of periodic table trends in melting points and boiling points.
© Charles D. Winters. From KOTZ/TREICHEL/WEAVER. Chemistry and Chemical Reactivity (with General ChemistryNOW CD-ROM), 6E. © 2006 Brooks/Cole, a part of Cengage Learning, Inc. Reproduced by permission. www.cengage.com/permissions

e8.2 Think About It
See a video of reactions of Li, Na, and K reacting with water.

e8.3 Think About It
Examine the periodic trend in atomic radius. Is it counterintuitive?
© Charles D. Winters. From KOTZ/TREICHEL/WEAVER. Chemistry and Chemical Reactivity (with General ChemistryNOW CD-ROM), 6E. © 2006 Brooks/Cole, a part of Cengage Learning, Inc. Reproduced by permission. www.cengage.com/permissions

e8.4 Think About It
Compare the periodic table trend in ionization energies with that of atomic radii.
© Charles D. Winters. From KOTZ/TREICHEL/WEAVER. Chemistry and Chemical Reactivity (with General ChemistryNOW CD-ROM), 6E. © 2006 Brooks/Cole, a part of Cengage Learning, Inc. Reproduced by permission. www.cengage.com/permissions

e8.5 Think About It
Examine the trend in ionic charge across each period.

e8.7 Think About It
See the periodic table trends in electronegativities.
© Charles D. Winters. From KOTZ/TREICHEL/WEAVER. Chemistry and Chemical Reactivity (with General ChemistryNOW CD-ROM), 6E. © 2006 Brooks/Cole, a part of Cengage Learning, Inc. Reproduced by permission. www.cengage.com/permissions

e8.8-8.9 Think About It
See the periodic table trends in electron affinity. Examine the trend in electron affinity down groups and across periods.
© Charles D. Winters. From KOTZ/TREICHEL/WEAVER. Chemistry and Chemical Reactivity (with General ChemistryNOW CD-ROM), 6E. © 2006 Brooks/Cole, a part of Cengage Learning, Inc. Reproduced by permission. www.cengage.com/permissions

e8.10 Think About It
Review the electromagnetic spectrum and the relationships between energy, wavelength, and frequency.
© Charles D. Winters. From KOTZ/TREICHEL/WEAVER. Chemistry and Chemical Reactivity (with General ChemistryNOW CD-ROM), 6E. © 2006 Brooks/Cole, a part of Cengage Learning, Inc. Reproduced by permission. www.cengage.com/permissions

e8.11 Think About It
Investigate the significance of the line spectrum for hydrogen.

e8.12 Think About It
See a model that explains why only certain energies of light are emitted.

e8.13 Think About It
Apply these ideas to the colours of fireworks and flame tests for metals.

e8.14 Think About It
Simulate the photoelectric effect to study the relationships among the intensity and energy of light, the choice of metal, and the current produced.

e8.15 Think About It
See the meaning of magnetic spin and a video of the magnetic property of oxygen.

e8.17 Think About It
See different ways of representing orbitals.

e8.18 Think About It
See how the shells and sub-shells are organized.

e8.19 Think About It
See how the energies of the orbitals vary for multi-electron atoms.

e8.20 Think About It
Use the aufbau principle to hypothetically “create” electron configurations for atoms.

e8.21 Think About It
See how effective nuclear charge varies across the periodic table.