Lora Obaid

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

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Biology learning materials by Lora

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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

Lora graduated from University of Maryland, College Park

Academic expertise of your biology tutor

Review sessions icon

Review sessions

Homework help icon

Homework help

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Real world application

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Test prep strategies

Advanced Placement (AP) Program (USA) icon

Advanced Placement (AP) Program (USA)

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AI modules

Summary

Podcast

Quiz

Learnings

Flashcard

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Zero Risk Guaranteed

15-days refund

Free tutor swap

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1-yr validity

24/7 support

Types of students for biology class

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ADHD

Middle School students icon

Middle School students

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Home schooled

Elementary School students icon

Elementary School students

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Anxiety or Stress Disorders

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College students

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High School students

Your biology tutor also teaches

Biology

Biology

Cell biology

Cell biology

Genetics

Genetics

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Biology concepts taught by Lora

Student learned 2 days ago

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

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Student learned 4 days ago

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

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Student learned 5 days ago

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

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Student learned 5 days ago

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

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Student learned 8 days ago

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

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Student learned 10 days ago

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

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Teaching tools used by biology tutor

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Digital whiteboard

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Flashcards

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Practice worksheets

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Interactive diagrams

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Digital Note taking

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