Biology / Bio 0111 · Atom · ~20 seconds
Matter and Elements
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State
Matter is any substance that occupies space and has mass; an element is matter that cannot be broken into simpler substances by ordinary reactions.
Show
Carbon, oxygen, hydrogen, and nitrogen are the four elements that make up most of the matter in a living organism.
Watch for
An element is defined by what a reaction cannot do to it, not by how common it is.
Builds on
- Nothing — this is a starting point.