Specialty Medical Coding Certification. 1  Hematology and Oncology â CHONCâ¢. 2  Internal Medicine â CIMCâ¢. 3  Interventional Radiology and Cardiovascular â CIRCCÂ®. 4  Obstetrics Gynecology â COBGCâ¢. 5  Ophthalmology â COPCâ¢. 6  Orthopaedic Surgery â COSCâ¢. 7  Otolaryngology â CENTCâ¢. 8  Pediatrics â CPEDCâ¢. FREE Practice Exam & Study Guide through Aug 31st.
Oxygen is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element and oxidizing agent that readily forms compounds (notably oxides) with most elements. Photosynthesis releases oxygen, and respiration consumes oxygen.
How to Test for Oxygen Gas. Oxygen is a chemical element with the formula O2. It is a odorless, colorless gas.Chemically, oxygen oxidizes the majority of other elements and organic compounds forming oxides; for example, water (H2O) or carbon dioxide (CO2).xygen is a chemical element with the formula O2. It is a odorless, colorless gas. Chemically,... 1  How to Test Oxygen Level.