ANSWER:
Physical chemistry is the branch of chemistry that deals with the physical structure of chemical compounds, the way they react with other matter and the bonds that hold their atoms together. An example of physical chemistry is nitric acid eating through wood.
Answer:
23
Explanation:
we do not care about electrons, so 11 + 12 = 23
D. the potential energy of the reactants is low; the potential energy decreases gradually; then increases slightly.
<span>Much like tornado watchers look to the skies for clues that a twister is forming, NASA and university scientists are watching the Sun in an effort to better predict space weather – blasts of particles from the Sun that impact the magnetosphere, the magnetic bubble around the Earth.</span>
It’s number 3 : decomposition and melting
