Ch 11 Vocab Flashcards

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0
Q

Periodic law

A

The law that states that the repeating chemical and physical properties of elements change periodically with atomic numbers of the elements

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1
Q

Periodic

A

Describes something that occurs or repeats at regular intervals

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2
Q

Period

A

In chemistry, it’s a horizontal row of elements in the periodic table

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3
Q

Group

A

A vertical column of elements in the periodic table; elements in a group share chemical properties

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4
Q

Metals

A

An element that’s shiny and conducts heat and electricity well

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5
Q

Non metals

A

An element that conducts heat and light poorly

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6
Q

Metalloids

A

Elements that have properties of both metals and nonmetals

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7
Q

Semiconductors

A

An element or compound that conducts an electric current better than an insulator but not as well as a conductor

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8
Q

Alkali metal

A

One of the elements of group 1 of the periodic table

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9
Q

Alkine earth metal

A

One of the elements of group 2 of the periodic table

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10
Q

Transition metals

A

Groups 3-12

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11
Q

Lanthanides

A

Elements in the 1st row that follow lanthanum

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12
Q

Actinides

A

Elements in the 2nd row that follow actinium

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13
Q

Halogens

A

One of the elements in group 17. Halogens combine with most metals to form salts

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14
Q

Nobel gases

A

Elements in group 18; Nobel gases are unreactive

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