BSC 108 Chapter Notes - Chapter 2: Surface Tension, Hydrogen Bond, Evaporative Cooler
23 Jan 2017
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Matter: elements and compounds: all organisms and everything around them are made of matter, the physical. In three state: solid liquid gas: elements: Substance that cannot be broken down into other substances by chemical reactions: trace elements: Required in only very small amounts, but you cannot live without them. 0. 01% of your weight are trace elements iodine is a trace element: compounds that"s why you need to eat foods that naturally contain iodine. Substances that contain two or more elements in a fixed ratio. Elements combine they are more common than pure elements. Atoms: each element consists of one kind of atom, atom: the smallest unit of matter that still retains the properties of an element. The smallest amount of an element carbon is just one carbon atom: structure of an atom. Subatomic particle with a single unit of + charge. Subatomic particle with a single unit of charge.
