Sticky substances are substances that have a high viscosity and tend to adhere to surfaces. TARS, GOOPS, and Goos are all examples of sticky substances. TARS are a type of hydrocarbon derived from the distillation of organic materials such as wood, coal, or petroleum. GOOPS are a type of adhesive made from a combination of ingredients such as rubber, resin, and oils. Goos are a type of glue made from a combination of ingredients such as polyvinyl acetate, polyurethane, and acrylics.