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
Your biology tutor - Lora
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

Academic expertise of your biology tutor
Review sessions
Homework help
Real world application
Test prep strategies
Advanced Placement (AP) Program (USA)
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 students for biology class
ADHD
Middle School students
Home schooled
Elementary School students
Anxiety or Stress Disorders
College students
High School students
Your biology tutor also teaches
Biology
Cell biology
Genetics

Biology concepts taught by Lora
The session primarily focused on reviewing the Student's chemistry homework, covering topics such as hybridization, resonance structures, bond length, formal charge, and molecular geometry. The Tutor systematically explained core concepts related to multiple bonds, sigma and pi bonds, atomic radius, and bond order, working through specific problems and clarifying areas of confusion. The Student was encouraged to seek additional perspectives on particularly challenging questions.
Hybridization of Atomic Orbitals
Electron Domain & Molecular Geometry
Resonance Structures & Formal Charge
Bond Order & Molecular Orbital Theory
Sigma (σ) and Pi (π) Bonds
Multiple Bonds & Their Properties
Student and Tutor reviewed the concepts of electron domain and molecular geometries, including their names, shapes, and bond angles. They then moved on to calculating formal charge to determine the best Lewis structures, and discussed molecular polarity, distinguishing between polar and nonpolar molecules. The Student practiced applying these concepts to various molecular structures, and flashcards were recommended for memorization.
VSEPR Theory: Electron Domain vs. Molecular Geometry
Core Electron Domain Geometries & Bond Angles
Molecular Geometry: Influence of Lone Pairs
Formal Charge: Optimizing Lewis Structures
Molecular Polarity: Net Dipole Moments
The Student and Tutor reviewed Lewis structures, focusing on the octet rule, calculating valence electrons, and the step-by-step process of drawing structures including those with double/triple bonds and expanded octets. They also began discussing molecular geometries, differentiating between electron pair and molecular shapes. The Tutor offered to upload notes for the Student to use for their upcoming quiz.
Lewis Structures: Step-by-Step Drawing
Valence Electrons & the Octet/Dutet Rule
Understanding Expanded Octets and Multiple Bonds
Electron Pair Geometry vs. Molecular Geometry
The Student and Tutor reviewed chemical reactions, focusing on writing and balancing complete and net ionic equations, including the concepts of aqueous solutions, ion solvation, and precipitates. They practiced applying solubility rules to predict product states and were introduced to electrolytes, acids, and bases, covering proton donation/acceptance and neutralization reactions. The Tutor plans to check with the student regarding the required level of memorization for solubility rules.
Aqueous Solutions & Ion Salvation
Solubility Rules & Predicting Precipitates
Electrolytes: Strong
Weak
& Non
Introduction to Acids & Bases
Net Ionic Equations & Spectator Ions
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
Rate Laws and Experimental Determination of Reaction Order
Factors Affecting Reaction Rates
Enthalpy Change (ΔH): Exothermic vs. Endothermic
Catalysts and Reaction Rate Enhancement
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
Teaching tools used by biology tutor
Digital whiteboard
Flashcards
Practice worksheets
Interactive diagrams
Digital Note taking

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