It is possible to increase a reaction rate by adding very small amounts of a catalyst, and this is a. the catalyst is used over and over again during the reaction. b. only a small amount of catalyst is needed to increase temperature. c. the catalyst is only needed at the very start of the reaction. d. only a small amount of catalyst is needed to increase concentration.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.