Download Test 1. 2nd prep. ques

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nd
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1
Test 1
Choose the correct answer
1- All the following elements are from semi metals except --------------------.
a- a-silicon
b- b-tellurium
c- c-boron
d- d-lithium
2- The strongest non metal lies in group ------------------.
a- 1A
b- 2A
c- 1B
d- 7A
3- The metal oxide are ----------------a- Acidic oxides
b- Basic oxides
c- Amphoteric oxides
d- Neutral oxides.
4- The transition element starts to appear from the -------------------period
a- Second
b- Third
c- Fourth
d- Fifth
5- The scientist who added zero group is -----------------.
a- Mendeleev
b- Rutherford
c- Moseley
d- Bohr.
2
Complete the following
1- From examples of polar compound are –----------------- and ------------------ ,
while from non polar compound are ------------and ----------------2- Mendeleev arranged the elements as ascendingly according to –-------------------, while Moseley arranged the element ascendingly according to –---------------------.
3- The element ( 13 X ) lies in period ---------------------- and group –------in
the modern periodic table.
4- the element that present in group 2A are called -----------------5- The modern periodic table consist of ----------------- horizontal periods
and ------------------- vertical groups.
Locate the position of the following elements in the modern
periodic table
1- 11 Na:----2- 18 Ar: ------3- 20 Ca: ---4- 9 F: --------
Write balanced chemical equation which expresses each of the following
reaction
1- Bromine with potassium iodine
----Br2+2 KI ⤍2KBr + I2------------------------------------------------------------------2- Sodium with water
------2Na + 2H2O⇢ 2 NaOH + H2------------------------------------------------------3- Zinc with dil hydrochloric acid.
-----Zn + 2 HCl ⤍ZnCL2+H2--------------------------------------------------------------
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Write the scientific term of
1- The ability of the atom in covalent bond to attracts electrons toward
itself . (-electro negativity )
2- The measuring unit of atomic radius which is used to measure the
atomic size.(--picometer-)
3- Elements present in group zero.( noble gases )
4- It is the series in which metals are arranged in a descending order
according to their chemical activity . (--chemical activity series )
5- Oxides of metals. (---basic oxides )
Compare between: basic oxides and acidic
Basic oxides
Acidic oxides
- They are metal oxides
- They are non metal oxides
- They are formed by the reaction
of metal with oxygen
- They are formed by the reaction
of non metal with oxygen
- Some of them dissolve in water
giving alkalis
- They dissolve in water giving
acids
- Ex : Na2O- MgO
- Ex- CO2 – SO2
Give reason for
1- Element of group 1A are known as alkaline metals.
because they react with water forming alkaline solution.
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2- Liquefied nitrogen is used in preservation of eye cornea.
because it has low boiling point 196°c.
3- By increasing the atomic number of element in group 1A the metallic
property increases.
because the atomic size increases.
4- Cobalt 60 is used in preservation of food.
because it emits gamma rays which stop the reproduction of microbial
cells5- Both sodium ion (Na+) and fluoride ion (F-) have the same electronic
configuration.
Because Na11 atom tends to lose one electron to be Na10 while F9 atom
tends to gain one electron to be F10, so they have the same
configuration
Test 2
Complete the following
1- Mendeleev arranged the element ascendingly according to -----------------while Moseley arranged them ascendingly according to --------------------.
2- By increasing the atomic number in the group, the atomic size -------------------, while the electro negativity ----------------------------.
3- Mg +2 HCl ⤑ -----------------+ ------------------.
4- During the chemical reaction, alkaline metals lose their ----------------------electrons forming ----------------------ions.
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5- CO2 + H2O ⤑ ------------------.
Choose the correct answer
1- The metal oxides are
a- Acidic oxides
b- Basic oxides
c- Amphroteric oxides
d- Neural oxides.
2- The transition elements start to appear from the------------------- period
a- Second
b- Third
c- Fourth
d- Fifth
3- The scientist who added zero group is
a- Mendeleev
b- Rutherford
c- Moseley
d- Bohr
4- Which of the following has the same period with 12Mg -----------------a- 7N
b- 15P
c- 12Ca
Complete the following equation
1- Mg +------------------ -⤑ MgCl2 + ----------------.(2Hcl – H2 )
2- Co2 +H2O ⤑ ---------------------.( H2Co3 )
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Write scientific term for
1- Elements that has both properties of metals and non metals .
(Metalloids )
2- An atom of non metallic element that gained an electron or more.
( -ve ion )
3- Element of ‘f’ block that is located below the periodic table.
(actinides and lanthanides)
4- The halogen which exists in solid state. ( Iodine )
5- The elements which occupy the middle block (d) in the periodic table.
( transition element )
Give reason for
1- Sodium is kept under kerosene.
Because sodium is very active metal
2- Solution of carbon dioxide in water turns litmus solution into red.
Because CO2 + H2O = H2CO3 , which turns litmus paper red
3- Caesium is considered from the strongest metallic elements.
Because caesium has the largest atomic size
4- Water is more polar than ammonia.
Because the difference in electronegativity between oxygen and
hydrogen is greater than the electronegativity between hydrogen and
nitrogen.
Test 3
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Complete the following
1- By increasing the atomic number of an element in the same period, the
electronegativity ---------------------------------------.
2- Each period in the modern periodic table starts with --------------------elements.
3- The strongest non-metallic element lies in group ----------------.
4- ------------------- lie preceding noble gases in the periodic table, and during
the chemical reaction they form -------------------ions.
Put (√) or (x)
1- The scientists Rutherford discovered the main energy levels in atom
( )
2- Methane and hydrogen sulphide are from polar compound ( )
3- Moseley classified elements of each group into two subgroups. ( )
4- Some bases dissolve in water forming alkalis. ( )
5- The atomic size increases by increasing the atomic number in group
(
)
6- Metals have more than 4 electrons in the outer most shell. ( )
7- The modern periodic table is the first table for element arrangement.
( )
8- Chlorine is found in a solid state. ( )
Choose the correct answer
1- -------------------- is from halogens
a- Sodium
b- Chlorine
c- Helium
d- Calcium
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2- When sodium reacts with water, ------------------ gas evolves.
a- O2
b- CO2
c- H2
d- N2
3- Transition element appear starting from period ------------a- 2
b- 3
c- 4
d- 5
4- The most active metal in group 1A is
a- Na
b- Cs
c- K
d- Li
5- Each period in the periodic table ends with
a- A metalloids
b- An inert gas
c- A non-metal
d- Metal
6- the element which its atomic number =17 is similar to that with atomic
number =-------------------------a- 2
b- 7
c- 9
d- 19
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Correct the under lined word
1- Rutherford discovered the main energy levels. ( Bohr )
2- Non metal oxides are considered basic oxides ( acidic oxides)
3-
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Ne is found in period and group 1A. (zero)
4- in modern periodic table, period starts with inert gas ( Metal )
what happens when?
1- Bohr hadn’t discovered the main energy level
The periodic table will not be established
What is the importance of
1- Cobalt 60 : used in food preservation
2- Liquefied nitrogen: used in persevering cornea of eye
Find the atomic number for each of the following
1- element (x) lies in 2nd period and group (3A)
Atomic number = 5
2- element (Z) lies in 3rd period and group (7A)
Atomic number = 17
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