Knowing what you know about the nucleus and the subatomic particles in the nucleus, what do you think is the charge of the nucleus of an atom?

Compare and contrast physical changes with chemical changes.

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 is the molar mass of potassium nitrate, kno3