Chemistry Vocab

Minimum energy for a reaction to occur or to transform the reactants into an activated complex.

Stable nuclei cluster over a range of neutron-proton ratio.

Reaction in which material that starts the reaction is also one of the products that can start another reaction.

The minimum amount of fissile material needed to maintain a nuclear chain reaction.

Inner orbital electron is captured by the nucleus of its own atom.

Combined enthalpy and entropy of a system.

The change in the enthalpy of a chemical reaction that occurs at a constant pressure.

Difference between the mass of an atom and the sum of the masses of its protons, neutrons, and electrons.

Measure of its burning efficiency.

Radioactive atoms that are incorporated into substance so that movement of the substance can be followed by radiation detectors.

Elements with more than 92 protons in their nuclei.

2 protons and 2 neutrons bond together.

An electron emitted from nucleus during some kinds of radioactive decay.