Plz hurry!! When an electron moves from a lower to a higher energy level, the electron
A absorbs a continuously variable amount of energy
B always doubles its energy
C moves closer to the nucleus
D absorbs a quantum of energy

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

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

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?