Combined Science Chemistry C1 - Elements

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What in the nucleus decides what type of atom it is?
The number of protons
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What is a substance that only contains atoms with the same number of protons called?
An element
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What are isotopes?
Different forms of the same element with the same number of protons, but a different number of neutrons
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Isotopes have...
The same atomic number, but different mass numbers
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Relative atomic mass of an element =
sum of (isotope abundance x isotope mass number) / sum of abundance of all the isotopes
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Other cards in this set

Card 2

Front

An element

Back

What is a substance that only contains atoms with the same number of protons called?

Card 3

Front

Different forms of the same element with the same number of protons, but a different number of neutrons

Back

Preview of the back of card 3

Card 4

Front

The same atomic number, but different mass numbers

Back

Preview of the back of card 4

Card 5

Front

sum of (isotope abundance x isotope mass number) / sum of abundance of all the isotopes

Back

Preview of the back of card 5

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