Matching Pairs WHMIS Symbols MatchingOnline version Match the symbols to their name by Chelsea Ashworth 1 Materials Causing Other Toxic Effects 2 Biohazardous Infectious Materials 3 Materials Considered Dangerously Reactive 4 Oxidizing Materials 5 Compressed Gas 6 Flammable Materials 7 Infectious or Poisonous Materials 8 Corrosive Substance