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Unit 1 - Lesson 2: Graduation of Properties of Elements in the Modern Periodic Table
Unit 1 - Lesson 2: Graduation of Properties of Elements in the Modern Periodic Table
نسخ
تكرار
اختبار خاص بالمعلم:
Mohamed farouk
إسمك
صفك
1
It is the ability of the atom in covalent molecule to attract the electrons of the chemical bond towards itself.
Electronegativity
Electrogravity
Positive ion
Negative ion
2
It is an atom of a metallic element which lost one electron or more during the chemical reaction.
Negative ion
Positive ion
Electronegativity
Electrogravity
3
It is an atom of nonmetallic element which gained an electron or more during the chemical reaction.
Electronegativity
Electrogravity
Negative ion
Positive ion
4
It is a covalent compound, in which the difference in electronegativity between its elements is relatively high
ionic compound
No correct answer
Polar compound
5
They are the elements, which have less than four electrons in their outermost energy levels.
Metals
Nonmetals
Metalloids
No correct answer
6
They are the elements, which have more than four electrons in their outermost energy levels.
Metals
No correct answer
Metalloids
Nonmetals
7
It is a series in which metals are arranged in a descending order according to their chemical activity.
biological activity series
physical activity series
No correct answer
Chemical activity series
8
They are the elements, which have the properties of both metals and nonmetals.
Nonmetals
No correct answer
Metalloids
Metals
9
The atomic radius is used as a measurement of the atomic size of the atom and its measuring unit is..........
millimetre.
metre.
picometre.
nanometre.
10
In periods, by increasing the atomic number, the.........
atomic size increases.
no correct answer.
atomic size decreases.
atomic radius increases.
11
During the chemical reactions, metal atoms tend to............
gain electrons and change into positive ions.
lose electrons and change into positive ions.
lose electrons and change into negative ions.
gain electrons and change into negative ions.
12
An element (X), whose atomic number is 13 so, the number of electrons in its lon is..........
8
10
11
12
13
Each period in the periodic table starts with.........
metal.
nonmetal.
metalloid.
inert gas.
14
By increasing the atomic number within the period, the...........
nonmetallic property increases.
atomic size decreases.
metallic property decreases.
all the previous answers.
15
By increasing the atomic number within group (1A), the .........
all the previous answers.
atomic size decreases.
nonmetallic property increases.
metallic property increases.
16
......... is the least metallic element in group (1A).
Li
Cs
Na
K
17
Metal oxides (as sodium oxide) are........ oxides.
acidic
amphoteric
basic
no correct answer
18
All of the following metals react with water except........
Mg
Cu
Na
K
19
Which of the following elements reacts with dilute hydrochloric acid ?...........
Zn
S
C
Cu
20
The 3rd period starts with elements whose oxides are as the following........
basic, amphoteric. then acidic.
basic, acidic, then amphoteric.
acidic, basic, then amphoteric.
acidic, amphoteric, then basic.
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