A convex lens makes light rays converge (come together) at the focal point or focus. The distance from the center of the lens to the focal point is the focal length of the lens. Convex lenses are used in things like telescopes and binoculars to bring distant light rays to a focus in your eyes.
Oxidation is the loss of electrons.
Left. Opposite of the direction the box is pushed.
Grams, Milligram, Microgram.
