What is a key difference between chemical and nuclear reactions? in chemical reactions, new compounds are formed. in nuclear reactions, compounds are destroyed. chemical reactions involve electron rearrangements. nuclear reactions involve changes to the nucleus. chemical reactions involve large changes in energy. nuclear reactions absorb or release small amounts of energy. in chemical reactions, only alpha radiation is emitted. in nuclear reactions, alpha, beta, and gamma decay may occur.

Answer;

Chemical reactions involve electron rearrangements. Nuclear reactions involve changes to the nucleus.

Explanation;

-Nuclear reactions involve a change in an atom's nucleus, usually producing a different element ,along with the emission of radiations like α, β and γ etc rays. Chemical reactions, on the other hand, involve only a rearrangement of electrons and do not involve changes in the nuclei.

-Different isotopes of an element normally behave similarly in chemical reactions as their extra-nuclear electronic configurations are same. The nuclear chemistry of different isotopes vary greatly from each other.

-Rates of chemical reactions are influenced by external effect like temperature,pressure and catalysts. Rates of nuclear reactions are spontaneous and are unaffected by such factors.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.

increasing transnational kinetic energy. because the transnational kinetic energy formula consists of only two variables, mass and velocity, increasing one of those properties is the only way to increase an object's transnational kinetic energy. increases to mass and velocity, however, do not have the same impact.