Help me name the IUPAC please

The formation of a solid, also known as a is an indication of a chemical change. precipitate particulate particle powder

Of the following elements, which is the least reactive? a. c b. h c. li d. he

A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground,its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy