What do these two changes have in common? Shaking up salad dressing. Adding dish soap to water in a sink

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.

What are the two largest greenhouse gases

Which method would be best to separate a mixture of sand and gravel