Why does the water turn blue after some time when blue ink is dropped in water? Which property of particles of matter is depicted here?

What is avogadro’s number, and why is it useful

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Which are forms of frozen water? check all that apply. dew frost hail rain sleet