A garage door opening device has a light near the floor. This light is pointed at a receiver. If a cat runs under the door while it is opening, the garage door stops moving. What property of light applies to this situation? A) The light changes color as it bounces off the cat. B) Light is a wave of energy which is absorbed by objects like the cat. C) Light will change speed when it strikes the cat before it gets to the receiver. D) Light travels in a straight line. The cat blocks the light from getting to the receiver.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.