<span>lipids. Lipids are sometimes referred to as fats. Lipids are a naturally occurring substance. Their main function in humans are storing energy and as part of cell membranes. Lipids are also used in the cosmetics industry. Glucose is a simple sugar found in humans and plants.</span>
The chemical make-up changes.
alkali metals are the most reactive family
they are located in column 1 on the periodic table
The component parts of a compound that can ever exist and still retain the chemical properties of that compound
<span>Quanta are described as discrete packets of energy because it requires a certain amount of energy (not just any amount of energy that is continuous) to excite electrons from one state to another.
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