2. Why is the salt solution heated

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg

In which of the following phases of matter do molecules have the highest amount of energy? a. liquid b. gel c. solid d. gas

An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o