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Chem > Periodic Table > Flashcards

Periodic Table Flashcards

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1
Q

What is the periodic table?

A

A tabular arrangement of chemical elements, organized by increasing atomic number.

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2
Q

True or False: The elements in the periodic table are arranged in order of increasing atomic mass.

A

False

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3
Q

What determines the position of an element in the periodic table?

A

Its atomic number.

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4
Q

Fill in the blank: The group number indicates the number of ______ in the outer shell of an element.

A

valence electrons

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5
Q

What are the horizontal rows in the periodic table called?

A

Periods

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6
Q

Which group contains the noble gases?

A

Group 18

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7
Q

What is the general trend of electronegativity across a period?

A

Electronegativity increases from left to right.

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8
Q

True or False: Alkali metals are found in Group 1 of the periodic table.

A

True

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9
Q

What is the significance of the atomic number?

A

It represents the number of protons in an atom’s nucleus.

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10
Q

Which element has the atomic number 6?

A

Carbon

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11
Q

Fill in the blank: Elements in the same group have similar ______.

A

chemical properties

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12
Q

What do you call elements that have similar properties and are found in the same column?

A

Groups or families

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13
Q

What is a characteristic of transition metals?

A

They can form multiple oxidation states.

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14
Q

True or False: Metalloids have properties of both metals and nonmetals.

A

True

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15
Q

What is the most reactive group of nonmetals?

A

Halogens (Group 17)

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16
Q

Which element is a liquid at room temperature?

A

Bromine

17
Q

What is the trend in atomic radius as you move down a group?

A

Atomic radius increases.

18
Q

Fill in the blank: The lanthanides and actinides are located at the ______ of the periodic table.

A

bottom

19
Q

What is the primary reason for the increase in ionization energy across a period?

A

Increased nuclear charge.

20
Q

Which element is found in Group 2 and is essential for human health?

A

Magnesium

21
Q

What are the two main categories of elements on the periodic table?

A

Metals and nonmetals

22
Q

What is the most abundant element in the universe?

A

Hydrogen

23
Q

True or False: The periodic table is a useful tool for predicting the properties of elements.

A

True

24
Q

What is the name of the first row of the f-block elements?

A

Lanthanides

25
Q

What property decreases as you move down a group?

A

Ionization energy

26
Q

Fill in the blank: The periodic law states that the properties of elements are a periodic function of their ______.

A

atomic numbers

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