In pursuit of this mission, the Lake County Ohio Port and Economic Development Authority is unique in the services it provides for the economic welfare of our community. Our services can assist would-be entrepreneurs to large corporations, small non-profits to large institutions and communities.
A compound is a substance made from two or more elements that have reacted chemically with each other. Remember this definition as you might need it in the exam! A compound is a completely new material that will often have totally different properties from the elements that made it. For example The element sodium is a highly reactive metal. The element chlorine is a yellow-green poisonous gas (non-metal). When the two react together they form a compound called sodium chloride.
1 Elements and Compounds are pure substances. 2  An element is a pure substance that cannot be decomposed into simpler substances. 3  Elements are listed in the Periodic Table of the Elements. 4  Each element has a 1 or 2 letter symbol. Elements are listed in the Periodic Table of the Elements. 2  Each element has a 1 or 2 letter symbol. 3  A compound is a pure substance that can be decomposed into simpler substances. 4  Compounds are made up of two or more elements.