Classify the following as an element, compound, homogeneous mixture, or heterogeneous mixture: iron (Fe) A. Element
B. Compound
C. Homogenous mixture
D. Heterogenous mixture

Temperature is defined as a. the equivalent of heat. b. a measure of the average kinetic energy of the individual atoms or molecules composing a substance. c. how hot or cold it is. d. the total kinetic energy of the atoms or molecules composing a substance. e. none of the above is correct.