Lesson (1) : The Periodic Table
Question 1:Write the scientific term
1. The number of protons in the nucleus of the atom.
2. The negative charged particles that rotate around the nucleus.
3. The liquid non-metallic element.
4. A gaseous halogen that has a yellowish green color.
5. The chemical name of lime stone.
6. Elements that occupies the left edge of the periodic table.
7. The elements which exist in the second column from the right side
of the periodic table.
Question 2:Give reasons for:
1. The nucleus of an atom is positively charged.
2. The atom in its ordinary state is neutral.
3. Nitrogen (N7) is a trivalent element.
4. Mercury is used in thermometers industry.
5. Alkali metals should be stored under kerosene.
6. Chlorine is added to water of swimming pools.
7. Some iodine compounds are added to the table salt.
Question 3 : Complete:
1. The atom is electrically ……. In the normal state.
2. The atomic mass is ……………………..
3. The element that its atomic number is (13) is found in period ….
And group …. In the modern periodic table.
4. ……….. is the first table to classify elements.
Question 4: Locate the position of the following
elements in the periodic table:
1. Magnesium (Mg12) 2. Phosphor ( P15)
3. Beryllium (Be4) 4. Neon (Ne10)
Define sublimation process and mention one
element that can undergoes it.
Lesson 2: Chemical Bonds
Question 1: Complete:
1. The nearest inert gas to magnesium (Mg12) is …. , while ….. is the
nearest inert gas to calcium (Ca20).
2. ……. Is an example foe ionic compounds.
3. Most of ionic compounds dissolve in polar solvents like ……., but
don't dissolve in non-polar solvent like ….. and …. .
Question 2: Write the scientific term:
1. The molecule that contains one calcium atom and two chlorine
atoms. (……………..)
2. A substances that its molecules are formed of different atoms.
(……………..)
3. The non-metallic element which gains one electron or more.
(……………..)
Question 3: Define:
1. Covalent bond 2. Hydrogen bond.
3. Ionic bond 4. Positive ion.
Question 4: Show by drawing the type of bond in the following
compounds:
1. Sodium atom (Na11) and chlorine atom (Cl17).
2. Two oxygen atoms (O8).
3. Calcium atom (Ca20) and chlorine atom (Cl17).
Question 5: Compare between :
1. Ionic bond & Covalent bond.
2. Ionic compounds & Covalent compound
Lesson 3: Chemical Reactions
Question 1:Complete the following:
1. NH3 + HCl →…… ( white…..).
2. 2NO + O2 →……….↑ (………gas)
3. Cu + ZnSO4 →………
4. Mg + ….. → NgSO4 + Zn↓
5. On adding silver nitrate solution to sodium chloride solution , a
……. PPt. of ……… is formed.
6. During the electrolysis of acidified water by Hofmann's voltmeter
,……… gas evolves at the cathode , while ….. gas evolves at the
anode.
7. Copper sulphate undergoes thermal decomposition into……….
And……….
8. The solutions of metal oxides turn litmus solution into………
Question 2: Give reasons for :
1. A white powder is formed when magnesium strip burns in air.
2. A reddish brown fumes are formed when nitric oxide is exposed to
air.
3. Sulphur trioxide is kept in tightly closed dry bottles.
4. Silver nitrate solution is not kept in an aluminium vessel.
Question 3: Show by symbolic balanced equations the effect of
heat on the following compounds:
1. Red mercuric oxide.
2. Copper nitrate.
3. Sodium nitrate,
4. Copper hydroxide.
Question 4: What happens when:
1. Adding dilute hydrochloric acid to a piece of zinc.
2. Immersing a plate of copper in zinc sulphate solution.
Question 5: What is meant by:
1. Chemical reaction. 2. Chemical equation.
3. Chemical activity series.
4. Electrolyte.
5. Electroplating.
Lesson 4: Oxygen gas
Question 1:Complete:
1. Oxygen gas used about ….. % of calcium carbonate and …… % of
silica.
2. Oxygen is used in ……. and ….. of metals.
3. ….. and …… are examples for salts rich in oxygen gas.
4. 2Mg + O2 → …… (…… powder)
5. Oxygen tends to combine with most of elements except …… , …….
and ……..
Question 2:Give reasons for:
1. We must expand the green areas.
2. Ozone layer is important for living organisms.
3. Oxidation and reduction processes are two complementary
processes.
Question 3: Define:
1. Reduction 2. Oxidation
3. An oxidizing agent.
4. The catalyst.
Question 4:
Show by drawing and balanced equation how can you prepare
oxygen gas in lab.
Lesson 5: Water
Question 1: Complete:
1. Water boils at 1000 and freezes at….. 0C and reaches its maximum
density at ………. 0C.
2. Waterfalls are used in generating ……… in many countries.
3. Pure water is a …… conductor of electricity , but it is a ……….
Solvent of ionic compounds.
4. The two types of bonds in water molecule are ….. and ……
Question 2: Give reasons for:
1. Ice floats on the surface of water.
2. The boiling point of water is high.
3. The closed bottle filled with water is broken when it is put in
freezer.
Question 3:
Mention two properties of water.
Question 4: Correct the under line:
1. Water boils at O0C.
2. When water freezes , its volume not change.
3. Density of water equals density of ice.
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First Term 2009/2010
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Unit 2 : Lesson (1)
Question 1: Complete the following:
1. Dynamo produces…………. Electric current , while dry cell
produces…….. electric current.
2. The electrical energy is in two types , the…… electricity and the
……… electricity.
3. In the dry cell the ….. energy changes to ……. Energy.
4. Polarization in the simple cell is the accumulation of …….. gas
on……..
Question 2: Put (√) or (x) and correct the wrong one:
1. Dynamo produces direct current. ( )
2. Polarization is the accumulation of hydrogen round the copper
plate in the simple cell. ( )
3. In the reaction , 2H+ + 2e- → H2
Oxidation occurs to hydrogen. ( )
Question 3: What happens in the following cases?
1. A plate of zinc used in the simple cell after a period of time .
2. When the coil of the electric generator rotates.
Question 4: What is the role of each of the following?
1. The generator that generates the electric current.
2. The copper plate in the simple cell.
Question 5: Correct the under line words:
1. During using the simple cell for a period of time N2 gas is
produced on copper.
2. The alternating current that is generated in the dynamo coil is the
current that has definite intensity and definite direction.
Question 6:
What are the characteristics of the alternating current.?
Unit 2: Lesson (2)
Question 1: Complete the following:
1. Electric current is the movement of electric charges regularly in
……. Direction through ………… conductors.
2. The potential difference is measured by ……. . it is also the unit
that is used to measure the ……… of an electric cell.
3. Ammeter is connected in the electrical circuit in……… , while
voltmeter is connected on ……..
Question 2: Give reasons for:
1. Use of rheostat in most electrical circuits.
2. Voltmeter is connected on parallel.
Question 3: What is meant by:
1. Intensity of electric current = 3 amperes.
2. Resistance of a wire equals 5 ohms.
Question 4: Compare between Ammeter & Voltmeter.
Question 5: Correct the under line words:
1. Ammeter is connected in the electrical circuit in parallel.
2. The resistance of the conductor decreases, when its length
increases.
Problem:
Calculate the intensity of the electric current when an amount of
electricity of 24 coulombs passes through a section of a conductor in
a time of 6 seconds.
Question 6:
What is the function of Rheostat in the electrical circuit?
Unit 2: Lesson (3)
Question 1: Complete the following:
1. The resistance of a conductor ………. When its length increases.
2. The reading of the voltmeter when no current passes in the
electrical circuit indicates the…………..
3. The potential difference between the two terminals of a conductor
is……… proportional with the electric current intensity.
Question 2: What is meant by:
1. The electromotive force of cell = 3 volt.
2. The potential difference between the two terminals of a conductor
of 2 ohms is 4 volt.
Question 3: Give reasons for:
1. The wire of the lamp is thin.
2. The e.m.f when the electrical cells are connected in series is more
than that if they are connected on parallel.
Question 4: Answer the following problem
What is the reading of the voltmeter which connected in parallel with
a conductor whose resistance is 3 ohms and the current of 4 ampere
passes through it ?
Question 5: Write the scientific term:
1. An apparatus that is used to measure the electrical resistance.
2. Work done to transfer an amount of electricity of one coulomb
between the two terminals of a conductors.
3. Electrical state of a conductor that allows the passage of an electric
current from it or to it , if it's connected with another conductor.