Whitch of the following atoms has the greatest nuclear charge? (A) Al
(B) At
(C) Si
(D) Na

Water molecules have a strong attraction to each other because of hydrogen bonding, allowing water to move against gravity up a plant's stem through capillary action. true false

Why doesn't heat added to water make the tempature rise above 100c

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line