ions and ionic compounds Flashcards Preview

9 science-- chemistry > ions and ionic compounds > Flashcards

Flashcards in ions and ionic compounds Deck (15)
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1
Q

atoms achieve complete stability by having a complete what?

A

valence energy level

2
Q

what is an ion?

A

a charged atom; the # of protons is different from the # of neutrons

3
Q

when is an ion formed?

A

when an atom gains/loses electrons

4
Q

in a metal, are electrons gained or lost to form an ion?

A

lost

5
Q

in a nonmetal, are electrons gained or lost to form an ion?

A

gained

6
Q

when a metal becomes an ion, is it positive or negative?

A

positive

7
Q

when a nonmetal becomes an ion, is it positive or negative?

A

negative

8
Q

can all electrons in an atom move?

A

no, only the valence electrons

9
Q

when is an ionic compound formed?

A

when a positive reacts with a negative

10
Q

what happens in an ionic compound?

A

a metal gives one or more of its electrons to a nonmetal in order for both to become stable

11
Q

do ionic compounds attract one another?

A

yes

12
Q

do ionic compounds have low or high boiling/melting points?

A

high

13
Q

are ionic compounds soluble in water?

A

yes

14
Q

are ionic compounds good conductors when dissolved in water or melted?

A

yes

15
Q

are ionic compounds good conductors when they are solids?

A

no