When energy is needed in order for the reaction to happen, then that reaction is known as endotermic. When the reaction has as a result energy then it is exotermic. An example of an endotermic reaction would be photosynthesis, for an exotermic: combustion.
Answer: ability to undergo a chemical reaction
Explanation:
In 5.70 mol of Hafnium there are 34,326
Photosynthesis is the ability for a plant to turn light into energy, thus feeding it
<span>they both had their conclusions based on solid evidence</span>
