- Physical Sciences
a process that takes energy into the system. This increases the internal energy of the system (increases the enthalpy of the system).
ionisation chamber in which single ionising events can be detected.
in a chemical reaction no mass is gained or lost when substances react to form new products....
large deposits formed from the excrement and bodies of seabirds. Often found on islands.
a solution that cannot have any more of a solid dissolved into it, for example, if you continue...