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15
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4-During the chemical reactions, metal atoms tend to ..............electrons and change into .............ions.
lose - positive
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15
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1-Metal atom lose one or more valence electron & change to ................
positive (+ve) ion.
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15
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solve
d
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15
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5-The electronic configuration of sodium ion (Na+) is similar to that of ..... a- 7N b- 18Ar C- 10Ne d- 8O
C- 10Ne
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15
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4-Explai : Water that contains dissolved ionic compounds is a good conductor of electricity.
Because the electrical charge can pass from ion to ion in the solution.
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trap
No points!
Oops!
×
shark
Other team loses 10 points!
Okay!
×
rocket
Go to first place!
Okay!
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banana
Go to last place!
Oops!
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banana
Go to last place!
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gold
Win 50 points!
Okay!
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fairy
Take points!
5
10
15
20
25
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lifesaver
Give 15 points!
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seesaw
Swap points!
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star
Double points!
Okay!
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shark
Other team loses 15 points!
Okay!
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thief
Give points!
5
10
15
20
25
×
banana
Go to last place!
Oops!
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rocket
Go to first place!
Okay!
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shark
Other team loses 15 points!
Okay!
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thief
Give points!
5
10
15
20
25
15
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3-A strong attraction occurs between (+ve) ion & (-ve) ion forming ............................................
ionic compound chemically stable.
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15
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5-ionic Compounds a-Solid and brittle . b- High melting & boiling points. c-Dissolve in water. d-conduct electricity if dissolved in water e- all
e- all
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15
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1-Formed when valence electrons move from a metal atom to non-metal atom.
Ionic bond
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15
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6-Atoms lose, gain, or share electrons and become chemically stable as ……… a-an electron. B. an ion. C. a metal. D. a noble gas.
D. a noble gas.
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15
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2-Non atom gain one or more valence electron & change to ..............
negative (-ve) ion.
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15
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solve
A
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15
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7-An element (X), whose atomic number is 13 so, the number of electrons in its ion is ……… a- 8 b. 10 c. 11 d. 12
b. 10
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