The term "'''critical mass'''" refers to the amount of a radioactive [[isotopes|isotope]] necessary to cause an explosion due to a chain reaction.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref> It can also mean a Christian mass one attends before an important event and prays to God to help them in it.
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The term "'''critical mass'''" refers to the amount of a radioactive [[isotopes|isotope]] necessary to cause an explosion due to a chain reaction.<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>