Science, Tech, Math › Science Network Solid Definition in Chemistry What Is a Network Solid? Share Flipboard Email Print Diamonds are an example of network solids. Jesper Hilding Klausen, Getty Images Science Chemistry Chemical Laws Basics Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated July 08, 2019 A network solid is a substance made up of an array of repeating covalently bonded atoms. Network solids are also known as covalent network solids. Because of the way atoms are arranged, a network solid may be considered a type of macromolecule. Network solids may be either crystals or amorphous solids. Network Solid Examples Diamonds are network solids made of carbon atoms. Quartz is a network solid made of continuous SiO2 subunits. A silicon crystal is another example, consisting of Si atoms. Network Solid Properties The covalent bonding lends network solids characteristic properties: Generally insoluble in any solventVery hardHigh melting pointLow electrical conductivity in the liquid phaseVariable electrical conductivity in the solid phase (depends on bonding) Source Zumdahl, Steven S.; Zumdahl, Susan A. (2000). Chemistry (5 ed.). Houghton Mifflin, pp. 470–6. ISBN 0-618-03591-5.