Definition, properties and the identification of isotopes

من 111.85 QAR /س

The word isotopes are the combination of two words, one is Iso which means ''same', and another is topes which means ''places'' those elements which have the same atomic number (numbers
or proton), but different mass number are called isotopes.

In a neutral atom there is
equal numbers of proton and electron, so their chemical properties are same but
have different physical properties, so we can separate them by physical method.

Usually, mass spectrograph
is the method which is used to separate the isotopes of different elements.

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The math, physics, chemistry, and SVT courses of the French or Swiss program of maturity or university are done by either in-depth explanations or by a quick course and summary of essential needs according to the case of each student supported by exercises from the book or evaluations and exams from other high schools.
A special follow-up program to better prepare for the Terminales session.
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IGCSE Chemistry Content Overview:

1 The particulate nature of matter
2 Experimental techniques
3 Atoms, elements and compounds
4 Stoichiometry
5 Electricity and chemistry
6 Chemical energetics
7 Chemical reactions
8 Acids, bases and salts
9 The Periodic Table
10 Metals
11 Air and water
12 Sulfur
13 Carbonates
14 Organic chemistry

As and A level Chemistry Content overview:

Physical chemistry
1 Atoms, molecules and stoichiometry
2 Atomic structure
3 Chemical bonding
4 States of matter
5 Chemical energetics
6 Electrochemistry
7 Equilibria
8 Reaction kinetics
Inorganic chemistry
9 The Periodic Table: chemical periodicity
10 Group 2
11 Group 17
12 An introduction to the chemistry of transition elements
13 Nitrogen and sulfur
Organic chemistry and analysis
14 An introduction to organic chemistry 15 Hydrocarbons
16 Halogen derivatives
17 Hydroxy compounds
18 Carbonyl compounds
19 Carboxylic acids and derivatives 20 Nitrogen compounds
21 Polymerisation
22 Analytical techniques
23 Organic synthesis

IB Chemistry Content Overview:

Core
1. Stoichiometric relationships
2. Atomic structure
3. Periodicity
4. Chemical bonding and structure
5. Energetics/thermochemistry
6. Chemical kinetics
7. Equilibrium
8. Acids and bases
9. Redox processes
10. Organic chemistry
11. Measurement and data processing

Additional higher level (AHL)
12. Atomic structure
13. The periodic table—the transition metals
14. Chemical bonding and structure
15. Energetics/thermochemistry
16. Chemical kinetics
17. Equilibrium
18. Acids and bases
19. Redox processes
20. Organic chemistry
21. Measurement and analysis

Option
A. Materials
B. Biochemistry
C. Energy
D. Medicinal chemistry

IGCSE Physics Content Overview:

1 General physics
2 Thermal physics
3 Properties of waves, including light and sound
4 Electricity and magnetism
5 Atomic physics

Advanced Organic Chemistry Content Overview:
1. Carbon Compounds and Chemical Bonds
2. Representative Carbon Compounds: Functional Groups, Infrared Spectroscopy, & Intermolecular Force
3. An Introduction to Organic Reactions: Acids and Bases
4. Alkanes: Nomenclature, Conformational Analysis, & An Intro to Synthesis
5. Stereochemistry: Chiral Molecules
6. Ionic Reactions - Nucleophilic Substitution & Elimination Reactions: Alkyl Halides
7. Alkenes & Alkynes: Properties & Synthesis, Elimination Reactions of Alkyl Halides
8. Alkenes & Alkynes II: Addition Reaction
9. Spectroscopic Methods of Structure Determination
10. Radical Reactions
11. Alcohols & Ethers
12. Alcohols from Carbonyl Compounds, Oxidation-Reduction & Organometallic Compounds
13. Conjugated Unsaturated Systems
14. Aromatic Compounds
15. Reactions of Aromatic Compounds
16. Aldehydes & Ketones I: Nucleophilic Additions to the Carbonyl Group
17. Aldehydes & Ketones II: Enolates & Enols
Aldol & Alkylation Reactions
18. Carboxylic Acids & Their Derivatives: Nucleophilic Substitution at the Acyl Carbon
19. Synthesis & Reactions of a-Dicarbonyl Compounds: More Chemistry of Enolate Ions
20. Amines
21. Phenols & Aryl Halides: Nucleophilic Aromatic Substitution
22. Carbohydrates
23. Lipids
24. Amino Acids & Proteins
25. Nucleic Acids & Protein Synthesis

Amin

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Struggling with math, physics, or chemistry? You're not alone — these subjects are hard, and classroom explanations are rarely enough.
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A university trainer with more than 7,000 hours of experience online and face-to-face for more than 1,100 highly successful university students, in all majors, for engineering students across Turkey in Turkish, English and Arabic, first and second year in mathematics and physics + third and fourth year in specialization subjects (electrical energy engineering and renewable energy) .

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I offer private tuition and tutoring lessons in mathematics, physics for high school and middle school students, with personalized guidance focused on results. Each lesson is adapted to the student's level, pace, and needs in order to fill gaps, strengthen foundations, and develop a solid working method. My teaching aims to make concepts clearer, more accessible, while reinforcing the student's independence and autonomy.

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Passionné par la transmission du savoir et fort d’une solide formation en mathématiques appliquées, je mets aujourd’hui mon expérience au service des élèves du collège et du lycée pour les accompagner en Mathématiques et en Sciences de la Vie et de la Terre (SVT).

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Experienced teacher (14 years of experience) offers support courses in physics-chemistry / Mathematics / SVT remotely for:
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Docteur en physico-chimie des matériaux, passionnée par l’enseignement, je donne des cours particuliers de chimie de à tous les niveaux. À la suite d'une expérience de recherche et d'enseignement dense, je base ma pédagogie sur les besoins et le rythme de chaque élève pour rendre les concepts scientifiques clairs, concrets et actuels. Mon but est de promouvoir la compréhension à fond, de renforcer la confiance en soi et de guider chaque élève vers un succès scolaire et personnel. N'hésitez pas à me contacter afin d'avoir un soutien concocté en adéquation avec vos besoins et une progression garantie.

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Courses for the first year in Arabic language, Islamic education and social sciences.
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مرحبا بكم في صفحتي، الخاصه بعلوم الحياه الارض في السلكين الاعدادي والتاهيلي من الاولى اعدادي الى الثانيه باكالوريا جميع تخصصات،
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بالنسبه للمنهجيه المعتمده سوف نبدا اولا بشرح مفصل لمختلف محاظر الدرس والمفاهيم الاساسيه ثم بعدها سننتقل الى امتحانات وفروض للكشف عن اهم المحاور التي يركزون عليها في التمارين ثم سننتقل ايضا الى اكسابكم بالمنهجيه الصحيحه للاجابه عن مختلف الاسئله من وصف او تحليل او ملاحظه ثم تفسير ثم استنتاج الخلاصه وغيرها من هذا النحو

Yomna

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This course explains how air interacts with bodies, from airfoils to aircraft.

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Boundary layers and flow separation

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Automotive aerodynamics
Wind and performance analysis