Colored light is a particular wave length, white light I all the colors
Category: Chapter 9 Chem review exam 3
How are x Rays used
X rays pass through many substances that block visible light and are therefore used to image bones and organs
Why do microwave ovens heat food but seldom heat the dish the food is on?
Microwaves can only heat things containing water, and therefore the food which contains water, becomes hot but the plate does not
Explain the difference between a Bohr orbit and a quantum mechanical orbital
The Bohr orbit describes the path of an electron as an orbit or trajectory ( a specific path). A quantum mechanical orbital describes the path of an electron using a probability map
Explain in terms of absorbed and reflected light, why an blue object appears blue
A blue object appears blue because when white light is present the object absorbs all wavelengths of light except blue which it reflects
Explain how the motion of an electron is different from the motion of a baseball. What is a probability map?
The electron has wave particle duality, which means the path of an electron is not predictable. The motion of a baseball is predictable. A probability map shows a statistical, reproducible, pattern of…
Why should excess exposure to ultraviolet be avoided?
Ultra violet light contains enough energy to damage biological molecules, and excessive exposure increases risk of skin cancer and cataracts
What produces gamma rays
Gamma rays are produced by the sun, the stars, and by certain unstable nuclei on earth
What is light
A wave of electromagnetic energy traveling through space