Aplastar una caso es un cambio químico o físico

Is this a scientific model? use complete sentences to explain why or why not. a graphic organizer showing the water cycle

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

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.