ions Flashcards

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1
Q

what are ions

A

ions are charged particles that form when an atom or molecule loses or gains electrons.

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2
Q

what atoms form ions

A

atoms without full valence shells lose or gain electrons to become stable through a full valence shell.

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3
Q

how do ionic compound form

A

certain atoms lose electrons to become stable, these electrons will transfer to atoms who need electrons to become stable.

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4
Q

How to write ions

A

the chemical symbol followed by the overall charge of the ion as a superscript.

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5
Q

What is a cation and what elements are cations

A

a positively charged ion, mostly formed from metals in groups 1,2 and 3.

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6
Q

what is an anion

A

a negatively charged ion, formed from non-metals, in groups 5, 6 and 7.

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7
Q

how to write ionic compounds

A

cation goes first followed by the anion. The anion name is also changed to end with ide or ate.

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