Classifying Elements Flashcards

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1
Q

Neutron

A

Particles in an atom that have a neutral charge.

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2
Q

Electron

A

A particle in the space outside the nucleus of an atom that comes one unit of negative electric charge.

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3
Q

Atom number

A

The number of protons in a single atom of an element .

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4
Q

Molecule

A

A particle that contains two or more atoms joined together

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5
Q

Metal

A

A substance that conducts heat and electricity.

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6
Q

Nonmetal

A

A group of elements that are poor conductors of heat and electricity.

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7
Q

Nobel gases

A

The nonmetallic elements such as helium,neon,argon,krypton,xenon,and radon.

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8
Q

Metalloids

A

A small group of elements with some properties of both metals and nonmetals.

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9
Q

Periodic table

A

A chart that shows all of the known elements and their properties.

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10
Q

Proton

A

A particle in the space inside the nucleus of an atom that carries one unit of positive electric charge.

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