Use the drop-down menus to identify whether each description represents a convex lens, a concave lens, or both.

Has a focal point:

Is thicker in the middle than near the edges:

Creates only a right-side-up image:

Causes light rays passing through it to refract:

A concave lens is

✔ thinner

in the middle than at the edges, and causes light rays to

✔ diverge

.

A convex lens is

✔ thicker

in the middle than at the edges, and causes light rays to

✔ converge

.

Explanation:

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.