Adecrease in temperature decreases a. the activation energy of the reactionb. the number of collisions between moleculesc. the number of products in the mixturethe reaction rate willa. decreaseb. increase c. remain constant

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.