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Related Flashcards
Cards In This Set
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Matter
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Occupies space; has mass
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Mass
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Similar to weight; the amount of matter that an object represent
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Weight
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The effect of gravity on mass
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Element
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Can NOT be broken down by normal chemical reactions
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Compound
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Two or more elements combined in a fixed ratio; for example H2O
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Is molecular oxygen and hydrogen considered a compound?
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No- a compound is two or more elements
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Mixture
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Elements or compounds mixed but without chemical reaction
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Atoms
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A fundamental unit of matter
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Subatomic particles
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 What is inside an atom |
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Which elements are the most important in biological systems?
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C Carbon 6
H Hydrogen 1 N Nitrogen 7 O Oxygen 8 |
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What do atoms look like?
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 The inside of the atom has shells, electrons, protons and neutrons |
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Atomic Number
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The number of protons in the nucleus
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Atomic Weight
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The number of protons+ the number of neutrons in the nucleus of the atom
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