Atoms & Elements

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Description and Tags

Chemistry

Atoms

13 Terms

1
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what are atoms

tiny particle, basic building blocks of life

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what are elements

contain one type of atom, can’t be broken down into simpler substances

3
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what is a molecule

2 or more chemically combined substances - H₂O

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what is a compound

2 or more different combined elements - CO₂

5
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atomic number

number of protons in the atom of an element

6
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mass number

total number of protons and neutrons in the atom of an element

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mass number - atomic number = ..

neutrons

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proton

positive, nucleus, 1

9
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neutron

neutral, nucleus, 1

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electron

negative, orbiting, 1/1836

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electronic configuration

the location of electrons in an atom

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isotypes

atoms with the same number of protons but different number of neutrons

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