the modern periodic table Flashcards

1
Q

how is the periodic table organised?

A

in order of increasing atomic number

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2
Q

where are metals and non-metals found?

A

metals to the left, non-metals to the right

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3
Q

vertical columns

A

groups

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4
Q

rows

A

periods

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5
Q

what do the periods represent?

A

another full shell of electrons, same number of energy levels

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6
Q

what does the group number tell you?

A

the number of electrons on the outer shell, same number of outer electrons

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7
Q

what is the trend in each group?

A

they all have similar properties as they have the same number of outer electrons

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8
Q

what is the atomic number?

A

the number of protons in an atom

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9
Q

what is the atomic mass?

A

the total number of protons and neutrons

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10
Q

which number is on top?

A

relative atomic mass

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11
Q

which energy level do electrons occupy?

A

the lowest available

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12
Q

valence electron

A

the outermost electron

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13
Q

what happens to the size of the atom as you go down the column?

A

it increases by gaining another shell

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14
Q

why is the periodic table called periodic?

A

similar properties occur over regular intervals

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