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Chemistry > Chapter 6 > Flashcards

Chapter 6 Flashcards

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1
Q

How Dobereiner grouped the Periodic Table?

A

triads

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2
Q

What did Newlands contribute to the development of the Periodic Table?

A

He discovered the Law of

Octaves.

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3
Q

What is the Law of Octaves?

A

The properties of the elements

repeat every 8th element.

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4
Q

The person who developed

the first Periodic Table?

A

Mendeleev

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5
Q

How did Mendeleev organize

the Periodic Table?

A

By increasing atomic mass.

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6
Q

Why did Mendeleev leave
blanks in the Periodic
Table?

A

He predicted the properties of undiscovered elements.

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7
Q

What did Mosely determine?

A

The positive charge in the

nucleus.

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8
Q

How did Mosely arrange

the Periodic Table?

A

By increasing atomic

number.

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9
Q

The name for the vertical

columns on the Periodic

A

Groups or Families.

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10
Q

The name of the horizontal rows in the Periodic Table?

A

Period

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11
Q

The number of groups in the Periodic Table?

A

18

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12
Q

The number of periods in the Periodic Table?

A

7

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13
Q

The name for Group I in the Periodic Table?

A

Alkali Metals.

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14
Q

Why are Noble Gases called inert?

A

They don’t react.

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15
Q

The definition of electron affinity?

A

The energy change that occurs when an atom gains an electron.

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16
Q

The definition of electronegativity?

A

The ability to attract
electrons in a chemical
bond.

17
Q

Some of the properties of metals?

A

malleable, ductile, high luster,

conduct heat and electricity.

18
Q

Some of the properties of nonmetals?

A

Brittle, dull, not ductile, do
not conduct heat or
electricity.

19
Q

What are metalloids?

A

They have the properties of
both metals &
nonmetals.

20
Q

Where are the metals located?

A

On the left side of the Periodic Table.

21
Q

The definition of atomic radius?

A

The distance between the center of the nucleus & the outermost electrons.

22
Q

What happens when atoms gain electrons?

A

they get bigger

23
Q

The definition of ionization energy?

A

The positive charge in the

nucleus.

Chemistry (5 decks)

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