Introduction to Chemistry: Atoms, Molecules, and the Mole Concept — PickAClass
⏱ 3h 📚 30 lessons

Introduction to Chemistry: Atoms, Molecules, and the Mole Concept

A text-based guide for beginners to understand the structure of matter, chemical formulas, and basic quantitative relationships in chemistry.

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About this course

Chemistry explains how the world works, but its foundational concepts can often feel abstract. Start your journey here by mastering the core principles that govern all matter and chemical change. This course provides a comprehensive, written introduction to fundamental chemistry. You will develop a solid conceptual understanding of the atom, learn how elements interact to form compounds, and practice using the essential language of chemical equations and stoichiometry. What you'll learn: * Understand the historical development and modern model of atomic structure, including subatomic particles and isotopes. * Differentiate between elements, compounds, and mixtures, and describe various methods for separating physical mixtures. * Learn the basic principles of chemical bonding (ionic and covalent) and how they determine molecular properties. * Apply the rules of chemical nomenclature to correctly name and write formulas for common ionic and covalent compounds. * Practice balancing chemical equations and interpreting the Law of Conservation of Mass. * Master the mole concept and stoichiometry to perform quantitative calculations involving mass and moles in chemical reactions. The course begins with the basic definitions of matter and moves systematically through atomic theory and the periodic table. We then transition to chemical bonding, nomenclature, and conclude with the fundamental calculations required for reaction analysis. This course is designed for absolute beginners, high school students, or anyone needing a zero-prerequisite entry point into the study of chemistry. No prior science knowledge is assumed. Begin building your strong foundation in core chemistry today.

Course contents

What you'll get

  • 📜 Certificate of completion
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  • 💬 Personal AI tutor
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  • ♾️ Lifetime access
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  • 📱 Phone or computer
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  • 💸 14-day refund
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  • ⚡ Short & focused
    3h of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
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Name Surname
has successfully demonstrated mastery of
Introduction to Chemistry: Atoms, Molecules, and the Mole Concept
Skills demonstrated
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Behavioral pattern analysis
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1.2 hrs
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Decision-architecture frameworks
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1.4 hrs
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A/B test design
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1.7 hrs
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Introduction to Chemistry: Atoms, Molecules, and the Mole Concept
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Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
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pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We don’t store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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