Changes

An '''element''' is a material that is composed of only one type of [[atom]].  Each different element has a different periodic number, which is the number of [[protons]] in its [[nucleus]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>  [[Hydrogen]] has only one proton whereas [[uranium]] has 92. Uranium is the largest of the stable elements occurring in nature.  All of the elements are listed on the [[periodic table of the elements|periodic table]] with the heavier ones produced in a laboratory. These elements (or [[compounds]] made from these elements) make up all matter on the earth and quite possibly all matter outside of the earth as well.

An '''element''' is a single type of [[atom]] as defined by its periodic number, which is the number of [[protons]] in its [[nucleus]].<ref>Wile, Dr. Jay L. ''Exploring Creation With Physical Science''. Apologia Educational Ministries, Inc. 1999, 2000</ref>  [[Hydrogen]] has only one proton whereas [[uranium]] has 92. Uranium is the largest of the stable elements occurring in nature.  All known elements are listed on the [[periodic table of the elements|periodic table]], with the heavier ones produced in a laboratory. Chemical compounds are made from joining atoms of the same or different elements. These elements and their compounds make up all matter on the earth and quite possibly all matter outside of the earth as well.

==References==

==References==