9. diamonds and quartz crystals look very similar but diamonds cost considerably
more. give two reasons why diamonds cost more.

Reaction rate depends on how many molecules are coming into contact with each other with enough energy to react. increasing the temperature of the reactants will increase -

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

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