With Internet Group Management Protocol (IGMP) snooping, Layer 2 devices also can make intelligent multicast forwarding decisions by examining the contents of each frameâs Layer 3 IP header. Consider the example of a heterogeneous Layer 2 and Layer 3 network that does not use IGMP snooping.ith Internet Group Management Protocol (IGMP) snooping, Layer 2 devices also can make intelligent multicast forwarding decisions by examining the contents of each frameâs Layer 3 IP header. Consider the example of a heterogeneous Layer 2 and Layer 3 network that does not use IGMP snooping.
â¢ Volatile substances have a tendency to vaporize whereas nonvolatile substances do not have a tendency to vaporize. â¢ Volatile substances have a high vapor pressure at normal room temperature and pressure. Nonvolatile substances do not have a high vapor pressure in these conditions.
Share. Nonelectrolyte Definition: A substance that does not exist in an ionic form in aqueous solution. Examples: Ethyl alcohol (ethanol) is a nonelectrolyte because it does not ionize when dissolved in water.Return to the Chemistry Glossary Index. By Anne Marie Helmenstine, Ph.D.hare. Nonelectrolyte Definition: A substance that does not exist in an ionic form in aqueous solution. Examples: Ethyl alcohol (ethanol) is a nonelectrolyte because it does not ionize when dissolved in water.