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Bio 1 Exam

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michelleburkee2's version from 2015-09-14 23:45

Section

Question Answer
the smallest unit of an element and retains all the chemical propertiesdefiition of an atom
definition of an atomthe smallest unit of an element that still retains all the chemical properties of that element
definirion of an elementsubstances that cannot be broken down into simpler substances
substances that cannot be broken down until simpler substancesan element
what three things make an atom?a proton, neutron, and electron
elements are made of?entirely one type of atom
how many different elements occur in nature?92
what charge does a proton have?positive
what charge does a neutron have?no charge; neutral
what charge does an electron have?negative charge
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