When drawing a Lewis structure for a molecule how do you know what symbol at the center of the structure Any element's symbol in the chemical formula can be placed at the center of the Lewis structure

The element there is more than one of in the formula is usually placed at the center of the Lewis structure.

The element there is only one of in the formula is usually placed at the center of the Lewis structure.

In an oxidation-reduction reaction, oxidation is what happens when a reactant

Match the following vocabulary terms to their definitions. 1. amount of energy required to change 1 gram of material from the solid to the liquid state at its melting point 2. a measure of the kinetic energy of the particles of a substance 3. the amount of heat energy required to raise the temperature of 1 gram of liquid water from 14.5°c to 15.5°c 4. amount of energy required to change 1 gram of material from the liquid to the gaseous state at its boiling point 5. the amount of energy required to change 1 gram of a substance 1°c a. temperature b. latent heat of vaporization c. latent heat of fusion d. calorie e. specific heat

Which fact represents evidence for the big bang theory?