What question can you ask yourself if you are trying to determine if a mixture is heterogeneous or homogeneous? (This is not in the reading, so you will have to come up with your own question to tell the difference.)

Listed following are various physical situations that describe how light interacts with matter. match these to the appropriate category. 1) transmission? -visible light meets clear glass -visible light does not pass through a black wall -red light hits a red sweatshirt -light comes from your computer screen -cell phone signals pass through walls -blue light hits a red sweatshirt -white light hits a white piece of paper -light comes from a light bulb