Pyroclastic material is classified primarily by the size of the particles. What is the basis for classifying lava?

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 ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

If maltose undergoes hydrolysis what subunits does it results to?