BIOL201 - Notes - Chapter 2

BIOL201 - Notes - Chapter 2 - John Dalton (what) some...

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Chapter Two Essential Elements of Life (note)  about 25 of the 92 natural elements are known to be essential to life. (note)  just four make up 96% of living matter. -carbon - oxygen - hydrogen - nitrogen Neutrons, protons, electrons Atomic nucleus (def)  a dense core packed with protons and neutrons.
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Unformatted text preview: John Dalton (what) some british guy (note) bka dalton, or amu Isotopes (def) when atoms have more neutrons than protons Radioactive isotope (def) the nucleus decays spontaneously, giving off particles and energy...
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