Rany Purwade Putrie Malau
Cambridge & IB Chemistry Specialist | Certified Educator Get the grades you deserve with a tutor who actually knows the classroom!
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Rany Purwade Putrie Malau
Bachelors degree
/ 55 min
Rany Purwade Putrie Your chemistry tutor
I’m a professional Chemistry educator with over 6 years of teaching experience at both formal schools and online settings. I'm dedicated to making science both simple and exciting. Currently, I'm based in Thailand, where I teach at a leading bilingual school as their foreign Chemistry and General Science Teacher - with Cambridge curriculum. I hold a Bachelor’s degree in Chemistry Education and a permanent teaching license from my home country, Indonesia. I specialize in the IGCSE, AS/A Level and IB curricula, which means I know exactly what examiners are looking for. In my classroom, we don't just memorize formulas, we visualize them. I love using digital tools and drawings to model 3D molecular structures live, making the invisible world of atoms visible for the students. I'm great with abstract fundamental Chemistry concepts such as stoichiometry, down to the complexities of Organic Chemistry. My lessons are interactive, patient, and entirely centered on the students' learning style. I’ve helped dozens of students turn their 'Chemistry frustration' into 'Chemistry confidence', and I can't wait to do the same with the students here. Let's create a formula to success in Chemistry together!
Meet Rany Purwade Putrie
Rany Purwade Putrie graduated from State University of Medan
Specialities of your chemistry tutor
Personalized learning plans
A-Levels (UK)
Australian Curriculum (AU)
Test prep strategies
Homework help
International Baccalaureate (IB)
Chemistry lab skills
Chemistry experiments
Career guidance
CoTutorAI modules
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Zero Risk Guaranteed
15-days refund
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1-yr validity
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Types of learners for chemistry class
Middle School students
Elementary School students
High School students
Home schooled
Your chemistry tutor also teaches
Chemistry
Organic Chemistry
Chemical Reactions
Physical Chemistry
Inorganic Chemistry
Atomic Structure
Chemistry concepts taught by Rany Purwade Putrie
The Student and Tutor reviewed the pH scale, acidity, and basicity, practicing calculations involving pH, pOH, and ion concentrations using logarithms and scientific notation. They also explored the concept of buffers and the basics of titration for determining chemical concentrations.
Buffer Solutions
Titration and Neutralization
Converting pH to Concentration
Relationship between pH and pOH
Calculating pH using Logarithms
The pH Scale
The Tutor and Student reviewed definitions of acids and bases according to Arrhenius and Brønsted-Lowry theories, including concepts like conjugate acid-base pairs and acid/base strength. They practiced identifying stronger acids and bases and discussed the relationship between acid strength and conjugate base strength. The session concluded with an introduction to the pH scale, the dissociation constant (Kw), and how to determine if a solution is acidic, basic, or neutral.
Brønsted-Lowry Theory of Acids and Bases
Strength of Acids and Bases
The pH Scale and Kw
Arrhenius Theory of Acids and Bases
The session covered the chemical concepts of acids, bases, and electrolytes, including their definitions, naming conventions, and behavior in solution according to Arrhenius and Brønsted-Lowry theories. The student practiced identifying acids, bases, conjugate pairs, and classifying electrolytes, with plans to revisit the material in the next session.
Acid and Base Nomenclature
Electrolytes: Strong
Weak
and Non-electrolytes
Arrhenius and Brønsted-Lowry Acid-Base Theories
Conjugate Acid-Base Pairs
Amphoteric Substances
The Student and Tutor reviewed the principles of naming and writing formulas for ionic and covalent compounds, including the use of prefixes and polyatomic ions. They practiced converting between names and formulas for various chemical compounds, and discussed upcoming topics on acids and bases for a quiz.
Naming Ionic Compounds
Transition Metals in Ionic Compounds
Naming Covalent Compounds
Polyatomic Ions
Tools & techniques used by chemistry tutor
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Quizzes
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Digital whiteboard
Video conferencing
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