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Elements, compounds, and Chemical Change
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Apure substance that cannot be broken down chemically?
element
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What is a pure substance that cannot be broken down chemically into simpler substances?
element
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What is a model that organizes elements?
periodic table
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What has a negative charge in an atom?
electron
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How many atoms make up one kind of element?
one
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What is the total number of protons and neutrons in a specific atom?
mass
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What represents a name of an element usually written by a capital letter or a capital letter followed by a lower case letter?
chemical symbol
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What is the smallest particle of an element?
atom
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What is the atomic number?
Number of protons in an atom
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Where can you find a list of elements?
periodic table
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What is a pure substance made by chemically combining two or more elements?
compound
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