During the formation of the sun, gravity pulled matter closer and closer together until what event occurred?

A. Radioactive decay began.

B. Nuclear fusion reactions began.

C. Neutrons and protons formed.

D. A nebula exploded.

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.