When a catalyst is added to a reaction mixture, it Group of answer choices increases the rate of collisions between reactant molecules. None of these choices are correct. provides reactant molecules with more energy. provides a new pathway (mechanism) for the reaction. slows down the rate of the back reaction.

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

Which of these is a physical property

Which statement best describes the he properties of iconic compounds ?