Chemistry Regents Unit 1

Substance

form of matter with constant chemical composition and properties

Mixture

two substances that were mixed physically (not chemically bonded)

Compound

two substances that were chemically combined

Homogeneous mixture

mixture components are evenly distributed

Heterogenous mixture

mixture where the components are not evenly distributed and are easily distinguishable

Solutions are always _____

Homogenous

Kelvin to celcius

Celcius = Kelvin - 273