Science booklet الصف الأول الإعدادى للترم الأول

El-Zahraa Language School Science Middle Two
............:Date
Unit one
Lesson (1)
Attempts of elements classification
-:choose the correct answer
Moseley classified elements in his table in an ascending order -1
.……according to their
.a. atomic weights
.b. atomic numbers
.c. chemical activity
.d. valencies
The number of elements in Mandeleev's periodic table is…… -2
.elements
.a. 67
.b. 76
.c. 92
.d. 116
-: Write the scientific term
The horizontal rows in which elements are arranged in an -1
ascending order according to their atomic numbers in the periodic
(..……) .table
.Positively charged particles found inside the nucleus of the atom -2
(……)
1

............:Date
-: Mention the name of the scientist who
Corrected the atomic weights of some elements which were -1
.(…………) .estimated wrongly
.(…………) .Added group zero to the periodic table -2
Put (√) or ( × ) then correct what is wrong:-
.Mandeleev classified elements according to their mass numbers -1
( )
…………………………………………………………………………
………………
Moseley classified the elements of each group into three sub-groups -2
.(except group (7) and group (9
( )
…………………………………………………………………………
………………
-: Give reason for
.Scientists thought to classify elements according to their properties -1
Mandeleev had to put more than one element in one place of his -2
.table
2

............:Date
-: Complete the following statements
Elements of ''s'' block are located on the……. Of the periodic table -1
.and they arranged in………groups
Elements of block ''d'' are called…….elements and they appear -2
.………starting from period
What the scientific principal upon which the elements are
? arranged in the modern periodic table
-: Find the atomic number of each of the following
.(An element exists in period 2 and group (6A -1
.(An element exists in period 3 and group (1A -2
.An element exists in period 2 and group zero -3
3

............:Date
( Lesson (2
Graduation of properties of the elements in the modern periodic
table
-: Complete the following statements
In periods, by increasing the atomic number, the atomic -1
.……………size……….., while the electro negativity
..………Has the highest electro negativity which equals .………… -2
Is a polar compound because the difference in……….. .………… -3
.………between its elements is relatively
-: Give reason for
Methane and hydrogen sulphide are not considered from polar
.molecules
From the opposite figure, which represents a part of the periodic
table, answer the following:-
which element has the highest -1
?electro negativity
which element has the greatest - -2
?Atomic size
If the electro negativity of (H) equals 2.1 and that of (N) equals 3 -3
calculate the polarity ( the difference in electro negativity) in
.ammonia
4
H
Li
Na
K
Be B C N O

...........:Date
1- The measuring unit of atomic radius. (……………….)
The ability of the atom in covalent molecule to attract the electrons -2
(………………) .of the bond towards itself
3- They are covalent compounds in which the difference in electro
negativity between elements forming their molecules is relatively
high. (………………..)
Choose the correct answer:-
All the following ions have the same electronic configuration of -1
………neon (10Ne) except
a. Al+3
+b. Na
+c. Li
d. Mg+2
An element (X) its atomic number is 15 so, the number of electrons -2
..…………in its ion equals
a. 10
b. 15
c. 17
d. 18
5

Date:............
An element (Y), its atomic number is 13 so, the electronic -4
.……………configuration of its ion is
a. 2,8
b. 2,8,3
c. 2,8,8
d. 2,8,8,3
Show by symbolic balanced equation each of the following:-
.Adding dilute HCl to pieces of magnesium -1
.Burning magnesium strip in air, then adding some water -2
.burning a piece of coal in air -3
What is meant by:-
.Chemical activity series -1
.Acidic oxides -2
6

............:Date
Lesson (3)
Main groups in the modern periodic table
1- Elements which are located at the left side of the periodic table in
group (1). (…………..)
2- The most active metal. (…………..)
Choose the correct answer:-
Elements which have atomic numbers………….are called alkali -1
.metals
a. 2,8,16
b. 2,10,18
c. 3,11,19
d. 4,12,20
.………alkali metals have the following properties except -2
.a. they have low density
.b. they conduct electricity
.C. they conduct heat
.d. they don't react with water
7

............:Date
-: Give reason for
.Sodium and potassium are kept under the surface of kerosene -1
.Rubidium and cesium elements sink in water -2
The reaction of potassium with water is stronger than that of -3
.sodium
.Naming the metals of group (1) by alkali metals -4
-:Complete the following statements
Lithium element………..water as its density is…….than that of -1
.water
During the chemical reactions, sodium tends to………. an electron -2
.and changes into……….. ion which carries……….. positive charge
.Potassium reacts with water giving………. And gas evolves -3
………… + ..……… Na + 2 H2O 2 -4
The opposite figure represents group (1) of the periodic table.
(The element which has electronic configuration (2,8,81 -1
.………Is
..………The most metallic element is -2
.……elements which float on the water surface are -3
the least metallic element is…………. -4
............:Date
8
A
B
C
D
E

-: Give reason for
The chemical activity of alkaline earth metals increases by -1
.increasing their atomic size
.(sodium (11Na) is more active than magnesium (12Mg -2
: Mention one use for each of the following
:Silicon slides -1
..………………………………………………………………………
:Liquid sodium -2
.………………………………………………………………………
-: Give reason for
.Halogens are not exist in nature in elementary state -1
.Halogens are called by this name -2
.liquefied nitrogen is used in cornea preservation -3
.Choose the odd word, then mention the scientific term for the rest
.potassium/Iodine/Fluorine/Astatine/Bromine -1
.Fluorine/Chlorine/Oxygen/Hydrogen/Sodium -2
............:Date
9

Using the following diagram which represents a part of the
periodic table, answer -: the following question
:Write the letter of the element which -1
.………a. is from transition elements
..……(b. lies in period (3) and group (7A
2H
e
Z 8 9 10
Locate the position of the following elements in the modern
: periodic table
:(Calcium (20Ca -1
…………………………………………………………………………
:(Neon (10Ne -2
…………………………………………………………………………
-: How can you differentiate between
.(Copper and magnesium (using HCL -1
.Magnesium oxide and carbon dioxide -2
Date:............
( Lesson (4
10
1H
Y
19
X
M
N 35
36K
r
5 6
R G

Water
Choose -: the correct answer
………All following are from water properties except -1
.a. it exists in 3 states
.b. it has high latent heat
.C. it is used in generating electricity
.d. it is a non- polar compound
..…………water molecule consists of -2
.a. two atoms of three different elements
.b. three atoms of two different elements
.c. three atoms of three different elements
.d. four atoms of two different elements
.( Mention the importance of water (two only
-1
…………………………………………………………………………
-2
…………………………………………………………………………
? What is meant by hydrogen bond
............:Date
11

-: Give reason for
.Ice floats on water surface -1
.The high boiling point of water -2
The closed glass bottle filled with water is broken when it is put in -3
.freezer
.water is important liquid in distinguish fires -4
.Adding drops of dilute acid to water during its electrolysis -5
.During water electrolysis, oxygen gas evolves above the anode -6
.The positive pole of hofmann's voltameter -1
(……………………)
.Ions responsible for the basic property in water molecule -2
(..………………)
A kind of water pollution which results from mixing of humans and -3
.animals wastes with water
(.……………………)
A kind of water pollution which results from discharging of -4
.factories residues and sewage in rivers and seas
(....…………………)
............:Date
12

From the opposite figure, answer : the following questions
?What the name of this apparatus -1
(Label the numbers (1), (2) and (3 -2
what happens if a glowing splint is put above the anode and the -3
?cathode
.…………………… ,Above the anode -
…………………… ,Above the cathode -
?write the balanced equation of this reaction -4
13

............:Date
Unit two
Lesson one
The atmospheric layers
-:Problem
If the temp. at the foot of Everest mountain is 20.6◦ C. find the temp
.at. At its top of height 8862m. above earth's surface
-: Give reasons for
.All wither conditions take place in troposphere layer -1
.The troposphere layer regulates the earth's temperature -2
The atmospheric pressure in troposphere layer decreases by -3
.increasing the height above sea level
-: What is meant by
1- Atmospheric envelop of the earth:
…………………………………………........
…………………………………………………………………………
…………………………
-:Atmospheric pressure -2
…………………………………………………………………
…………………………………………………………………………
14

Date:............
What is the importance of:-
1- Aneroid:
…………………………………………………………………………
……………
:Altimeter -2
…………………………………………………………………………
…………
Arrange the layers of atmospheric envelope according to the
change in atmospheric pressure.
…………………………………………………………………………
…………………………………………………………………………
…………………………………………………………
-:Give reason for
.The lower part of stratosphere is suitable for flying airoplanes -1
.Ionosphere is important for radio stations -2
.Mesosphere layer is highly vacuumed -3
15

.The stratosphere layer is called by ozonic atmospheric envelope -4
............:Date
-:What is the importance of
1- VanAllenbelts:
…………………………………………………………………………
……
…………………………………………………………………………
……………………………
-2
Ozone layer :
…………………………………………………………………………
…………………………………………………………………………
-:satellites -3
…………………………………………………………………………
…………………………………………………………………………
……………………………
16

............:Date
Lesson
two
Erosion of ozone layer and global warming
-:Write the scientific term
A type of ultraviolet radiations that is absorbed completely (100%) -1
.by the ozone layer
(.…………………)
.Thinning or losing parts of ozone layer -2
(.…………………)
A molecule is formed by combining an atom of an element with -3
.molecule of the same element
(..…………………)
An atmospheric layer acts as a shield that protects living organisms -4
.from the danger of ultraviolet radiation
(..…………………)
-:Give reason for
.Increasing the size of the ozone hole in September every year -1
17

.Formation of ozone layer in the stratosphere layer -2
............:Date
-:Complete the following statements
Ultraviolet radiation has a…………..effect and infrared radiation -1
.has a………….effect
If the temperature at the base of mountain is 30◦C and at its top is -2
……………………-6◦C, so the height of the mountain is
The depletion of ozone layer above the……………pole increases -3
.in the month of………….every year
is an instrument used to measure the elevation of .…………… -4
.……………planes above sea level based on
-:Give reason for
.Formation of ozone layer in the stratosphere layer -1
.Ionosphere is important for radio stations -2
.The high boiling point of water -3
-:Choose the correct answer
…………………Chloroflourocarbon compounds are used as -1
.a. solvent material
.b. cooling material
.c. propellant material
18

d. . all the previous answers
............:Date
.Meteors are formed in…………..layer -2
.a. ionosphere
.b. stratosphere
.c. mesosphere
.d. exosphere
…………………ozone degree is measured by a unit called -3
.a. km
.b. Dobson
.c. mm2
.d. nm
.there are …………..bonds between the water molecule -4
.a. metallic
.b. ionic
.c. covalent
.d. hydrogen
19

............:Date
Unit three
Lesson one
Fossils
-:Write the scientific term
remains of old living organisms that lived in the past for a certain -1
(.…………………) .period, then became extinct
the fossils that exist in the rocks of different areas that indicate the -2
(..…………………) .extinction and evolution of organisms
20

............:Date
Lesson two
Extinction
-:What is meant by
:Moment of extinction -1
.……………………………………………………………………
:Extinction -2
…………………………………………………………………………
..……………
-:Give reason for
.Bald eagle is from endangered species -1
.Hunting of Tasmanian cat by peasants -2
.Disappearance of papyrus plant from upper Nile -3
-:What is meant by
:natural protectorates -1
.……………………………………………………………………
:food chain -2
…………………………………………………………………………
……………
Mid year revision2010/2011
21

For middle two for science
Write -: the scientific term
It is classification of elements in ascending order according to their
.atomic weights
It is classification of elements in ascending order according to their
.atomic number
.It is the block of elements which located at left side of periodic table
.Its number indicats the number of period
.Elements of zero group
It is the ability of atom in covelent molecule to attract the electrons of
.bond towards it self
They are covelent compounds in which difference in electro negativity
. between its elements is relatively high
They are elements which have less than four electrons in their outer
.most energy levels
They are elements which have properties of both metals and non-.
metals
.(It is the most metalic elements in group (1A
.It is the oxide which turns litmus solution to blue
.It is gas which burns with popsound
Aseries in which metals are arranged in descending order according to
.their chemical activity
.They are kept undre surface of kerosene
22

They . are divalent elements
.They are located at right side of periodic table before inert gases
.It is a radioactive elements used in food preservatoin
.It is slides are used in manufacture of compouters
.It has low boiling point so it is used in preservatoin of cornea
.It is the layer in which all weather phenomena
.It is the coldest layer of atmosphere
.It is the hottest layer of atmospheric envelope
.It is the layer which important in communication
.It is the layer which called ozonic atmospheric air layer
. It is a gas which composed of three oxygen
It is the continous increase in the average temperature of the earth’s
.near surface air
23

Compounds which should be reduced . to avoid erosion of ozone
It is the continous decrease without compersation in the number of
certain species of living organisms until all members of species die
.out
.It has the date of death of the last individual of that species
.They are examples of species extinct in recent times
.They are examples of species extinct in the old times
.It is list included 450 endangered
It is path of energy that transmits from a living organism to another in
.the ecosystem
.It is charactarized by containing a few numbers of living organisms
.It is charactarized by large number of members of living organisms
They are safe areas established to protect endangered species in their
.homeland
**************************
Date :
Complete:-
24

Mendeleev arranged the elements ascendingly according to………. -1
.………While Moseley arranged them ascendingly according to
The scientist ………….. discovered that the nucleus of the atom -2
………contains
-Moseley located …………and………..elements below its table.3-3
The modern periodic table consists of……….periods and………-4
.groups
Elements of (B) groups are called ………elements and they appear -5
………starting from period
6-The number of vertical groups indicates………
………The number of horizantal periods indicates-7
8-Element 13X lies in period ………and group ………
Elements in 3rd period and group (2A) so its atomic number -9
………equals
By increasing the atomic number withen a period the atomic size -10
………………due to
is the ability of the atom in covalent molecule to attract the ………-11
.………of the bond toward it
In periods by increasing the atomic number the electro-negativily -12
………of elements
By increasing the atomic size in the group the electro--13
………negativily………and the atomic number
.and………are examples of polar compounds………-14
25

In water molecule,the ………atom atrracts the electrons of the -15
………bondthan………atom as it has higher
During the chemical reaction,metal atom tend to………electrons -16
………and change into
.have the properties of both metals and non-metals………-17
Magnesium react with oxegen giving………which is called………-18
-18
Metals are arranged in a………order according to their……… in -19
.chemical activity series
metals react with hot water while………metal doesn’t react………-20
.with water
Burning a piece of carbon in air produces……… which dissolve in-21
………water giving
and………elements are from alkalimetals………-22
alkalimetals are………metals therefore they kept under the surface-23
………of ………or
Rubidium and cesium………in water as their densities are………-24
.than water density
.and……… elements are examples of alkaline earth metals ………-25
Halogens are named by this name because they react with ……… -26
………forming
27-………is used in food preservation bec. It emits……… rays which
prevent………cells.
26

The atmospheric pressure ………by incrasing the length of the air -28
.column
The temp.of the troposphere decreses with rate………˚C for each -29
.………high
layer is found in the upper part of stratosphere which ………-30
.absorbs……… rays
31-The highest temp.layer is………and the least temp.one is………
Most of weather features occurin……… layer where as satellites -32
.swim in ……… layer
Among the most dangerous pollutants of ozone layer………-33
………and
Among the most dangerous pollutants of ozone layer are………-34
compounds that are used in air conditioning sets and………
.compounds that are used in fire extingwhier
Ultraviolet radiation has………effect and the infra red radiation -35
.has a………effect
and………are from the examples of the climatic changes ………-36
.prodused by global warming
and……… are from recently extinct birds while………………-37
.and……… are from recently extinct mammals
38-………and………are from ways that protect the living organisms
from extinction.
and……… are from examples of enviromental ………,………-39
.pollution that lead to extinction of living organisms
27

.……………: Date
-: Give reason
.elements of the same group have similar properties-1
.both lithium (3Li) and nitrogen (7N) are located in the same period-2
.water molecule is from the polar molecules -3
By increasing the atomic number within groupsthe atomic size -4
.increases
.We can use HCL to differentiate between copper and magnesium -5
.Carbondioxide is acidic oxide but magnesium oxide is basic oxide -6
.Elements of group (1A) are known as alkalimetals -7
.Sodium and potassium are kept under the surface of kerosene -8
.Cobalt-60 is used in preservation of food -9
.The lower part of stratosphere is suitable for flying air planes -10
.The temp. Is high in the upper part of stratosphere -11
.The troposphere layer is called this name -12
.Formation of ozone layer in the sratosphere -13
.Infra red radiation cannot penetrate the earth’s atmosphere -14
Removing trees of tropical forests is one of the most important -15
.factors of extinction
.Bald eagle is from endangered species -16
.Increasing the rate of extinction often the industrial revolution -17
-:Locate the position of the following elements
.( Calcium( 20Ca
.(Neon (10Ne
28

……………: Date
-:Calculate the atomic numbers of the following elements
.An element is located in 2rd period and group zero
.(An element is located in 3 rd period and group (7A
***********************************************
-:Write the balanced chemical equations
.Burning of magnisium strip in oxygen
.Burning of carbon in oxygen
***********************************************
-:Mention one use for
.liquid sodium
.Cobalt
.Silicon
************************************************
-:What’s the importance of
.Altimeter
.Aneriod
.Ozone layer
************************************************
-:Give an example for
.one of the diseases caused to human due to ultra violet radiation
.Dangeruos pollution caused depletion of ozone layer
************************************************
29

Practical work for middle two
(Activity (1
Reaction of metal with dilute
acids
Put small pieces of magnesium in test tube -1
.and add some dilute HCl acid
Put a few of copper turning in another -2
.test tube and add some dil HCl acid
: . Obs
.A gas evolves with bubbles in case of magnesium -1
.No. gas evolves in case of copper -2
: Results
Active metals like Mg and Zn react with dilute acid to give salt and -1
.hydrogen gas evolves
.Inactive metals such as copper do not react with water -2
30

Activity (2)
Metals with oxygen
Burn one end of magnesium and -1
.put it in cylinder of oxygen
Add some water to produce substance -2
.then add drops of violet litmus solution
: . Obs
.Magnesium strip burns with bright light -1
.Litmus solution turns to blue -2
:Result
Some metals like (Mg) and iron (Fe) react
.with oxygen to give metal oxide
31

( Activity(3
Reaction of non-metals with
oxygen
Burn a piece of coal in burning spoon -1
.at put it in cylinder of oxygen
Add some water, then drops of -2
.violet litmus solution or paper
:.Obs
.Solution turns to red -
: Result
Non metals like carbon react
.with oxygen to give acidic oxide
32

( Activity(4
Reaction of alkaline earth metals
with water
:Steps
.get three basins of water -1
put Mg strip in first, a piece of calcium in the second and a piece of -2
.barium in third
: . Obs
Number of gas bubbles at barium is greater calcium and gas bubbles -
.at calcium is greater than magnesium
: Result
.Barium is more active than calcium -1
.Calcium is more active than magnesium -2
Ba > Ca > Mg
33

Activity (5)
Activity to show the concept of global
warming
.Get two empty bottles -1
Pour some water in first bottle and some -2
.amount of vinegar in second bottle
.Put thermometer in each bottle -3
Put some of sodium bicarbonate powder -4
in second bottle and close it immediately
.to keep CO2 trapped
Put both bottles in sunny place, then measure -5
.the temperature after 10 minuets
:.Obs
Higher reading of thermometer -
.in second bottle
: Result
Increase in concentration of CO2 causes
.increase in temperature
34

Activity (6)
Formation of ozone by effect of
ultraviolet rays
Use the plastic balls in front of you to . show how ozone gas is formed
Mention one importance for ozone
layer
It does not allow passing far and medium ultraviolet rays from sun to earth
.so protect living organisms from many harmful effects
35

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Science booklet الصف الأول الإعدادى للترم الأول