10.5 The Solid State of Matter
Ionic, molecular, metallic, and covalent network crystals compared by bonding and resulting properties, plus the defects real crystals carry.
5 exercises
10.5 Exercise 2
At very low temperatures oxygen, O2, freezes and forms a crystalline solid. Which best describes these crystals?
(a) ionic
(b) covalent network
(c) metallic
(d) amorphous
(e) molecular crystals
10.5 Exercise 4
Explain why ice, which is a crystalline solid, has a melting temperature of 0 °C, whereas butter, which is an amorphous solid, softens over a range of temperatures.
10.5 Exercise 6
Identify the type of crystalline solid (metallic, network covalent, ionic, or molecular) formed by each of the following substances:
(a) CaCl2
(b) SiC
(c) N2
(d) Fe
(e) C (graphite)
(f) CH3CH2CH2CH3
(g) HCl
(h) NH4NO3
(i) K3PO4
10.5 Exercise 8
Classify each substance in the table as either a metallic, ionic, molecular, or covalent network solid:
10.5 Exercise 10
Substance A is shiny, conducts electricity well, and melts at 975 °C. Substance A is likely a(n):
(a) ionic solid
(b) metallic solid
(c) molecular solid
(d) covalent network solid
Adapted from General Chemistry © 2019 Rice University. Licensed under CC BY 4.0. Sources: Chemistry 2e, Chemistry: Atoms First 2e. Imported at revision 32c7196.