5 The Periodic Table Flashcards

1
Q

Periodic

A

describes something that occurs or repeats at regular intervals

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2
Q

Periodic law

A

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

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3
Q

Period

A

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

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4
Q

Group

A

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

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5
Q

Alkaline metals

A

one of the elements of Group 1 of the periodic table ( lithium,sodium,potassium,rubidium,cesium, and francium)

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6
Q

Alkaline-earth metals

A

one of the elements of Group 2 of the periodic table (beryllium, magnesium,calcium,strontium,barium,and radium)

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7
Q

Halogens

A

one of the element of Group 17 of the periodic table (fluorine, chlorine,bromine,iodine,and astatine); halogens combine with most metals to form salts

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8
Q

Noble gases

A

one of the elements of Group 18 of the periodic table (helium,neon,argon,krypton,xenon,and radon); noble gases are unreative

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