Protons are positively charged and repel other protons. which other particle is found in the nucleus and separates protons so that the strong force can hold the nucleus together?

One or more substances changing into one or more substances is an example of a

How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.

What is the average rate of the reaction between 10 and 20 s?