- Physical Sciences
reactions that either simultaneously occur in both directions or that can be reversed by changing the conditions of the reaction
types of chemical âunitsâ â could be atoms, molecules, molecular fragments, simple or...
the energy released when a nucleus is formed from its component particles.
large deposits formed from the excrement and bodies of seabirds. Often found on islands.
in a chemical reaction no mass is gained or lost when substances react to form new products....