Particles > Structure and properties of matter > Structure and properties of inorganic molecules
All non-organic molecules are called inorganic molecules. Inorganic molecules do not contain carbon (oxides of carbon and carbonates are exceptions). Inorganic molecules are not usually found in living things but are common in nature.
Connection to Big Idea about energy: Processes that shape inorganic molecules, involve breaking and forming bonds which require energy. If more energy is released than taken in, the process is exothermic otherwise it is endothermic.
Connection to Big Idea about forces: Bonds in inorganic molecules are formed due to the presence of the electromagnetic force.
Connection to Big Idea about evolution: Inorganic molecules likes phosphate ions are building blocks of DNA and RNA which are the basis of evolution.
Connection to Big Idea about the cell: Water is the most abundant molecule in cells, accounting for 70% or more of total cell mass. As a polar molecule, water plays crucial roles in the formation of biological structures.
Connection to Big Idea about Earth: Inorganic molecules and their abundance on Earth have played a crucial role on the existence of life on Earth. Water, which is the most important inorganic molecule for life has a very peculiar behaviour when it becomes solid. Ice floats on top of liquid water as a result of its hexagonal packing within its crystalline structure. This makes lakes and rivers freeze from top to bottom, allowing underwater organisms to survive even when the surface of a lake is frozen.
Subjects related: Chemistry, Biology
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