Lora Obaid
Science Tutor- chemistry, biochemistry, physics, psychology, and biology for all ages, also can tutor MCAT and SAT math




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Lora Obaid
Bachelors degree
/ 55 min
Lora Your chemistry tutor
I am a science tutor who loves science! I recently graduated with my Bachelor of Science in Chemistry and am on the pre-medical track. Throughout college, I led independent supplemental study sessions in Principles of Genetics, making my own practice problems for students to use. I also tutored high school chemistry and middle school science in my free time, and have tutored since I was in high school. I have experience working with a variety of age ranges, from younger kids to college students. I love to spread my enthusiasm for science and personalize my tutoring to the students' needs. I love to lead engaging sessions and enjoy including real-world examples in my teaching. I am also a visual learner, so I draw diagrams to help explain concepts and will create specific practice problems for our session, along with answer keys for you to take away and continue to practice after our session. I request that my students send me their questions and topics of interest ahead of time (preferably 24 hours before), so I am able to sufficiently prepare material so that we can have a successful lesson. Let's work together not only to succeed in your science courses, but to enjoy the journey there!
Meet Lora
Lora graduated from University of Maryland, College Park

Specialities of your chemistry tutor
Advanced Placement (AP) Program (USA)
Real world application
Personalized learning plans
Visual learning
Homework help
AI modules
Summary
Podcast
Quiz
Learnings
Flashcard
Spotlight
Zero Risk Guaranteed
15-days refund
Free tutor swap
No cancel fee
1-yr validity
24/7 support
Types of learners for chemistry class
Anxiety or Stress Disorders
College students
High School students
Middle School students
ADHD
Elementary School students
Home schooled
Your chemistry tutor also teaches
Chemistry
Atomic Structure
Chemical Bonding
Biochemistry

Chemistry concepts taught by Lora
Student and Tutor reviewed key concepts in chemical kinetics, including interpreting potential energy diagrams, understanding activation energy and enthalpy changes (delta H), and explaining the effect of catalysts on reaction rates. They also practiced determining rate laws and overall reaction orders from experimental data. The Tutor committed to uploading session notes to a shared Google Doc for the Student's quiz preparation.
Potential Energy Diagrams: Key Components
Enthalpy Change (ΔH): Exothermic vs. Endothermic
Catalysts and Reaction Rate Enhancement
Factors Affecting Reaction Rates
Rate Laws and Experimental Determination of Reaction Order
The Student and Tutor reviewed various chemical reactions, including balancing equations and identifying five major types: combination, decomposition, combustion, single replacement, and double replacement. They practiced writing chemical formulas, determining charges for ionic and polyatomic compounds, and discussed concepts like diatomic elements and standard states. The Tutor provided notes and encouraged further practice to prepare for upcoming class material.
Balancing Chemical Equations
Classification of Chemical Reactions
Writing Chemical Formulas: Ionic and Polyatomic Ions
Standard States and Diatomic Elements
The Student and Tutor continued their discussion on electron configurations and orbitals, covering key principles like Pauli exclusion, Hund's rule, and exceptions for transition metals. They also delved into periodic trends, including effective nuclear charge, atomic radius, ionization energy, electron affinity, and electronegativity. The session concluded with the start of a challenging homework problem involving energy and wavelength calculations for excited states, with the Tutor planning to provide a detailed solution later.
Pauli Exclusion Principle
Hund's Rule & Orbital Filling
Electron Configurations
d-Orbital Filling & Transition Metal Ions
Electron Configuration Exceptions (Cr & Cu)
Paramagnetism & Diamagnetism
Periodic Trends
The Student and Tutor reviewed advanced chemistry concepts, including the wave-particle duality of light, quantization, the photoelectric effect, and the Bohr model. They also delved into modern atomic theory, covering De Broglie's hypothesis, the Heisenberg Uncertainty Principle, quantum numbers (n, l, ml, ms), the Pauli Exclusion Principle, Hund's Rule, and electron configurations for elements and ions. They plan to continue with electron configurations, specifically exceptions for d-block elements, and periodic trends in the next session.
Light: Wave
Particle
& Energy
The Bohr Model & Atomic Spectra
Wave-Like Matter & Quantum Weirdness
Quantum Numbers & Atomic Orbitals
Electron Configuration Rules
The Student and Tutor addressed technical audio difficulties before commencing a detailed review of chemical nomenclature for an upcoming test. They systematically covered the naming conventions for molecular, ionic, and acidic compounds, including hydrates, with a focus on understanding prefixes, suffixes, oxidation states, and polyatomic ions through numerous practice examples. The Tutor advised the Student to continue practicing with flashcards for prefixes and exceptions, and to use school worksheets and AI tools for additional practice to prepare for their test.
2. Naming Molecular Compounds (Two Non-Metals)
5. Naming Acids (Binary & Oxyacids)
4. Naming Hydrates
1. Types of Chemical Compounds & Classification
3. Naming Ionic Compounds (Metal + Non-Metal)
The Student and Tutor reviewed key chemistry concepts including intramolecular and intermolecular forces, oxidation numbers, and VSEPR theory with Lewis dot structures. They practiced identifying different types of forces and applying rules for oxidation number assignment and VSEPR geometry determination through example problems. For follow-up, the Student was assigned practice problems on Lewis dot structures and VSEPR geometries, as well as a recommendation to complete additional oxidation number problems and utilize online resources like Chad's Prep for further practice.
Intramolecular & Intermolecular Forces
VSEPR: Electron Domain & Molecular Geometry
Lewis Dot Structures for VSEPR
Oxidation Numbers & Rules
Tools & techniques used by chemistry tutor
Presentations
Practice worksheets
Digital whiteboard

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Every tutor is interviewed and selected for subject expertise and teaching skill.
