For example, the galaxy shown in the photograph is 12 million light years from Earth and contains polycyclic aromatic hydrocarbons, molecules that are essential to life. Some of these organic molecules have even been detected in star systems millions of light years from Earth. Other organic molecules detected in space include hydrocarbon molecules such as methane, and hydrocarbon derivatives, such as methanol and formaldehyde. For example, analysis of meteorites like the one shown in the inset photograph has revealed the presence of organic molecules that include amino acids, nucleic acids, sugars, and carboxylic acids-all molecules that make up organisms. In addition, organic molecules are not limited to planet Earth. Organic molecules may define life, but there are many other non-life-related organic molecules.
This description reflects the fact that the organic molecules that comprise living organisms are made of carbon atoms that are bonded to other carbon atoms, to hydrogen atoms, and to atoms of a few other elements such as oxygen and nitrogen. Go to scienceontario to find out more about organic chemistryĬientists describe life on Earth as carbon-based. What types of reactions do organic compounds undergo? What are the general structures and physical properties of hydrocarbons and hydrocarbon derivatives? 3. What are the characteristics of organic compounds? 2. Unit Contents Chapter 1 Structure and Physical Properties of Organic Compounds Chapter 2 Reactions of Organic Compoundsįocussing Questions 1. demonstrate an understanding of the structure, properties, and chemical behaviour of compounds within each class of organic compounds.investigate organic compounds and organic chemical reactions, and use various methods to represent the compounds.
Impact of organic compounds used in everyday life, and propose a course of action to reduce the use of compounds that are harmful to human health and the environment Overall Expectations In this unit, you will… Organic compounds have predictable chemical and physical properties determined by their respective structures.Īpplications have significant implications for society, human health, and the environment.
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