1.2 Flashcards

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1
Q

Element

A

a pure substance that cannot be broken down into any simpler substances

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2
Q

Compound

A

any substance that is formed by the chemical combination of two or more elements

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3
Q

Atom

A

the smallest unit of an element

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4
Q

Proton

A

a partials in the nucleus of an atom that carries one unit of positive electric charge

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5
Q

Neutron

A

a particle in the nucleus of an atom that has no net electric charge

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6
Q

Electron

A

a particle in the space outside the nucleus of an atom that carries one unit of negative electric charge

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7
Q

Nucleus

A

a dense structure inside the cell

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8
Q

Molecule

A

a particle that contains more then one atom joined together

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