Read the following chemical equation. mg(s) + h+ cl− → mg2+ cl− + h2 what most likely happens during this reaction?
magnesium gains two electrons.
magnesium loses two electrons.
chlorine gains one electron.
chlorine loses one electron.

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