They are changes in bonding energy between the molecules. If heat is coming into a substance during a phase change, then this energy is used to break the bonds between the molecules of the substance
Answer:
<u><em>Both acids </em></u>and<u><em> bases</em></u> can measured using the pH or pOH scale. Both scales provide a measure of either the H+ concentration or the OH- concentration. Notice that each scale shows were acids and bases both are located. When acids are measured, the pH is less than 7, but the pOH is greater than 7.
Explanation:
Answer:
Option a is the right one
Explanation:
Redox reactions are defined as the reactions where one element is oxidized (so the oxidation state is increased); and another element is reduced (oxidation state decreases). These changes in the oxidations states are defined by a transference of electrons.
When the oxidation state decrease → reduction → the element gains electrons
When the oxidation state increase → oxidation → the element release electrons
