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Chemistry Topic 2 > The Periodic Table > Flashcards

The Periodic Table Flashcards

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1
Q

What are the columns in the PT called?

A

Groups

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2
Q

What are the rows in the PT called?

A

Periods

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3
Q

What do all he elements in a group in the PT have in common?

A

Similar properties and react similarly

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4
Q

How did Dobereiner arrange the elements in the PT?

A

In triads

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5
Q

How did Newland arrange the elements in the PT and what did he notice about them?

A

Increasing atomic weight and every 8th element acted the same

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6
Q

What two things did Mendeleev do that no-one had done to the PT before?

A

If he needed to he switched them to fit better into groups and left gaps for new elements

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7
Q

Why did scientists accept Mendeleev’s PT was correct?

A

The new elements fitted into where Mendeleev predicted

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8
Q

How are elements arranged in the modern PT?

A

Atomic numbers

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9
Q

What group was missing from Mendeleev’s PT?

A

Group 0 (noble gases)

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Chemistry Topic 2 (10 decks)

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