Which of the following best explains how water is able to dissolve ionic substances?
answer
the positive and negative charges of the water molecule pull on the negative and positive ends of the ionic molecule to break them apart.
the strong hydrogen bond on water attracts the positive end of the ionic molecule and breaks the ionic bond.
the water molecule shares its electrons in a covalent bond with the positive end of the ionic molecule to break the ionic bond.
water acts as a proton donor for the negative end of the ionic molecule to attract the anion and form a new ionic molecule.

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.