atoms,elements,compounds Flashcards

1
Q

what is a key property of an element

A

In an element, all of the atoms are the same.

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2
Q

what is a key thing about compounds

A

Compounds contain two or more different elements chemically combined in fixed proportions

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3
Q

what is fixed proportions

A

it is where for every one of an element there is a another (for every one atom of magnesium we have one atom of sulfur)

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4
Q

what is the structure of an atom

A

it is a nucleus sourounded by electrons in its outer shells

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5
Q

what is the neucleus made of

A

protons and neutrons

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6
Q

what charge does protons have

A

+1

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7
Q

what charge does neutrons have

A

0

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8
Q

what charge do electrons have

A

-1

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9
Q

what is the relative mass both of the particles in the nucleus have

A

A relative mass of 1

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10
Q

what do we call an atom where there is an equal amount of electrons and protons

A

Neutral

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11
Q

what is a atom that has lost/gained electrons called

A

ion

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12
Q
A
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