Which of the following changes would show a decrease in energy? a. gas to plasma b. solid to gas c. liquid to gas d. liquid to solid

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

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

Identify the electromagnets with poles that are reversed from the electromagnet shown above