Free ebook for exam chemistry revision covering atomic structure, bonding, reactions, stoichiometry, equilibrium, organic chemistry, and more.
Free ebook + audiobook content
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1. Introduction to Chemistry
+ Exercise: Which of the following statements is true about chemistry? 3 minutes
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2. Atomic Structure
+ Exercise: Which of the following statements about atomic structure is true? 3 minutes
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2.1. Atomic Structure: Atomic Models
+ Exercise: Who proposed the first atomic model and how did it describe atoms? 3 minutes
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2.2. Atomic Structure: Subatomic Particles
+ Exercise: Which of the following statements about subatomic particles is true? 3 minutes
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2.3. Atomic Structure: Atomic Number and Mass Number
+ Exercise: What is the difference between the atomic number and the mass number of an atom? 2 minutes
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2.4. Atomic Structure: Electronic distribution
+ Exercise: What is the importance of understanding electron distribution in chemistry? 2 minutes
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2.5. Atomic Structure: Electronic Configuration
+ Exercise: What is the role of electron configuration in chemistry? 2 minutes
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2.6. Atomic Structure: Electronic Layers
+ Exercise: Which of the following concepts describes the tendency of atoms to gain, lose, or share electrons in order to have 8 electrons in their valence shell? 3 minutes
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2.7. Atomic Structure: Energy Sublevels
+ Exercise: What is the maximum capacity of electrons that each energy sublevel can hold in an atom? 3 minutes
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2.8. Atomic Structure: Linus Pauling Diagram
+ Exercise: What is the main function of the Linus Pauling diagram? 3 minutes
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2.9. Atomic Structure: Periodic Table
+ Exercise: Which of the following statements about atomic structure and the periodic table is correct? 2 minutes
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2.10. Atomic Structure: Periodic Properties
+ Exercise: Which of the following statements about atomic structure and periodic properties is true according to the text of the Chemistry e-book course for the ENEM exam? 3 minutes
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2.11. Atomic Structure: Atomic Radius
+ Exercise: What is atomic radius and what factors influence its measurement? 3 minutes
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2.12. Atomic Structure: Ionization Energy
+ Exercise: What is ionization energy and how does it influence the chemical reactivity of an element? 3 minutes
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2.13. Atomic Structure: Electronic Affinity
+ Exercise: What is the definition of electron affinity and how does it relate to atomic structure? 3 minutes
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2.14. Atomic Structure: Electronegativity
+ Exercise: Which of the following statements about electronegativity is true? 3 minutes
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2.15. Atomic Structure: Effective Nuclear Charge
+ Exercise: What is effective nuclear charge and how does it affect the structure and behavior of atoms? 3 minutes
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2.16. Atomic Structure: Isotopes
+ Exercise: What are isotopes and what is their importance in the study of chemistry? 3 minutes
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2.17. Atomic Structure: Isobars
+ Exercise: What are isobars in chemistry? 3 minutes
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2.18. Atomic Structure: Isotones
+ Exercise: What are isotones and what is their importance in chemistry and physics? 2 minutes
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2.19. Atomic Structure: Radioactivity
+ Exercise: What are the three types of subatomic particles that make up an atom and where are they located? 2 minutes
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2.20. Atomic Structure: Half-life
+ Exercise: What is half-life in the context of atomic structure and radioactivity? 3 minutes
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2.21. Atomic Structure: Radioactive Decay
+ Exercise: Which of the following statements about radioactive decay is correct? 3 minutes
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2.22. Atomic Structure: Nuclear reaction equations
+ Exercise: Which of the following statements correctly describes the three main types of nuclear reactions? 3 minutes
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2.23. Atomic Structure: Law of conservation of mass
+ Exercise: What is the Law of Conservation of Mass and what is its importance for chemistry and for the Enem test? 3 minutes
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2.24. Atomic Structure: Law of Conservation of Charge
+ Exercise: What does the Law of Conservation of Charge state? 3 minutes
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2.25. Atomic Structure: Law of conservation of energy
+ Exercise: What is the importance of atomic structure and the Law of Conservation of Energy in the study of Chemistry? 3 minutes
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3. Periodic Classification of Elements
+ Exercise: Who was the scientist responsible for creating the periodic table that reflected the periodicity of the properties of the elements and allowed to predict the existence of elements not yet discovered? 3 minutes
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3.1. Periodic Classification of Elements: History of Periodic Classification
+ Exercise: Who was the chemist who proposed the Law of Octaves and in what year did it occur? 3 minutes
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3.2. Periodic Classification of Elements: Laws of Periodic Classification
+ Exercise: What is the main difference between the periodic table proposed by Dmitri Mendeleev and the modern periodic table? 3 minutes
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3.3. Periodic Classification of Elements: Organization of elements in the periodic table
+ Exercise: Who proposed the current periodic table, called the Long Periodic Table, and when was it made official by the International Union of Pure and Applied Chemistry (IUPAC)? 3 minutes
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3.4. Periodic Classification of Elements: Periods and Groups
+ Exercise: What characteristic do elements in the same group on the periodic table share? 3 minutes
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3.5. Periodic Classification of Elements: Periodic Properties
+ Exercise: What is ionization energy and how does it vary on the Periodic Table? 3 minutes
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3.6. Periodic Classification of Elements: Electronegativity
+ Exercise: What is electronegativity and how does it vary on the periodic table? 3 minutes
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3.7. Periodic Classification of Elements: Atomic Radius
+ Exercise: What is the general trend of atomic radius in the periodic table? 3 minutes
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3.8. Periodic Classification of Elements: Ionization Energy
+ Exercise: Which of the following statements about ionization energy is correct? 3 minutes
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3.9. Periodic Classification of Elements: Electronic Affinity
+ Exercise: What is the definition of electron affinity and how does it vary on the periodic table? 3 minutes
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3.10. Periodic Classification of Elements: Electronegativity
+ Exercise: What is the relationship between electronegativity and the Periodic Classification of Elements? 3 minutes
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3.11. Periodic Classification of Elements: Metals, non-metals and metalloids
+ Exercise: Which of the following statements is true about the Periodic Classification of Elements? 3 minutes
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3.12. Periodic Classification of Elements: Blocks s, p, d and f
+ Exercise: Which of the following blocks of the Periodic Table is formed by groups 3 (IIIB) to 12 (IIB) and includes the transition metals, which are characterized by their properties to form colored compounds and for being good conductors of electricity and heat? 3 minutes
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3.13. Periodic Classification of Elements: Periodic Trends
+ Exercise: Which of the following statements about periodic trends in the periodic table is correct? 3 minutes
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3.14. Periodic Classification of Elements: Variation of properties along the table
+ Exercise: Which of the following statements about the changing properties of elements in the periodic table is true? 3 minutes
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3.15. Periodic Classification of Elements: Explanation of groups and characteristics of elements
+ Exercise: Which of the following statements is true about the Periodic Classification of Elements? 3 minutes
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4. Chemical Bonds
+ Exercise: Which of the following statements correctly describes ionic bonds? 3 minutes
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4.1. Chemical Bonds: Octet Theory
+ Exercise: Who proposed the octet theory, and what are the three main types of chemical bonds guided by this theory? 2 minutes
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4.2. Chemical Bonds: Ionic bond
+ Exercise: Which of the following statements correctly describes ionic bonding? 3 minutes
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4.3. Chemical Bonds: Covalent bond
+ Exercise: What is a covalent bond and how does it work? 2 minutes
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4.4. Chemical Bonds: Metal bond
+ Exercise: What is the main characteristic of metallic bonding and how does it influence the properties of metals? 3 minutes
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4.5. Chemical Bonds: Polarity of Bonds
+ Exercise: What is the relationship between the polarity of a chemical bond and the electronegativity of the atoms involved? 2 minutes
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4.6. Chemical Bonds: Intermolecular Forces
+ Exercise: Which of the following examples is a compound that forms a covalent bond? 3 minutes
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4.7. Chemical Bonds: Van der Waals Forces
+ Exercise: What are the three main types of Van der Waals forces described in the text? 3 minutes
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4.8. Chemical Bonds: Hydrogen Bonds
+ Exercise: What is the importance of hydrogen bonds in chemistry and biology, according to chapter 4.8 of our Chemistry e-book course for the ENEM test? 2 minutes
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5. Chemical Reactions
+ Exercise: Which of the following examples is a decomposition reaction? 3 minutes
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6. Stoichiometry
+ Exercise: Which of the following statements about stoichiometry is true? 3 minutes
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7. Chemical Solutions
+ Exercise: What is a chemical solution? 3 minutes
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8. Thermochemistry
+ Exercise: Which of the following statements about thermochemistry is correct? 3 minutes
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9. Chemical Kinetics
+ Exercise: Which of the following factors does NOT influence the rate of a chemical reaction, according to the study of Chemical Kinetics? 3 minutes
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10. Chemical Equilibrium
+ Exercise: What does the Law of Mass Action, formulated by Cato Guldberg and Peter Waage, say about chemical equilibrium? 3 minutes
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11. Acids and Bases
+ Exercise: Which of the following statements is true about acids and bases, according to chapter 11 of our eBook? 3 minutes
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12. Electrochemistry
+ Exercise: Which of the following concepts refers to a type of chemical reaction in which electrons are transferred from one chemical species to another, involving two processes: oxidation, where electrons are lost, and reduction, where electrons are gained? 3 minutes
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13. Radioactivity
+ Exercise: Who discovered radioactivity and what are the three main types of radioactivity? 3 minutes
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14. Organic Chemistry
+ Exercise: Which of the following statements is true about organic chemistry? 3 minutes
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15. Organic Functions
+ Exercise: What is the definition of organic functions in organic chemistry? 3 minutes
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16. Isomerism
+ Exercise: Which of the following is an example of Function Isomerism as mentioned in the text? 3 minutes
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17. Organic Reactions
+ Exercise: Which of the following is a correct description of a type of Organic Reaction? 3 minutes
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18. Polymers
+ Exercise: What is the classification of polymers that, after being molded and heated, cannot be reprocessed, as they form a rigid three-dimensional structure? 3 minutes
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19. Biochemistry
+ Exercise: Which of the following statements about biomolecules is correct? 3 minutes
About the free ebook with audio
Complete Chemistry Course for Exams
This free online ebook provides a structured review of essential chemistry concepts for school examinations. It combines fundamental theory with the relationships, patterns, and calculations commonly required in exam questions.
Build a strong chemistry foundation
Start with atomic structure, including atomic models, subatomic particles, electronic configuration, isotopes, radioactivity, and conservation laws. Learn how electron arrangements and nuclear properties explain the behavior of matter.
Understand the periodic table and bonding
Study periodic classification, groups, periods, element blocks, and key trends such as atomic radius, ionization energy, electron affinity, and electronegativity. The ebook also explains ionic, covalent, and metallic bonding, bond polarity, and intermolecular forces.
Prepare for calculation and application questions
Review chemical reactions, stoichiometry, solutions, thermochemistry, kinetics, equilibrium, acids and bases, and electrochemistry. These subjects help you interpret equations, predict changes, and solve quantitative chemistry problems.
Extend your knowledge of modern chemistry
The final sections cover radioactivity, organic chemistry, functional groups, isomerism, organic reactions, polymers, and biochemistry. Use this ebook as a focused revision resource to connect core principles across inorganic, physical, and organic chemistry.
What you will reinforce
- Electron structure and periodic trends
- Chemical bonds and molecular interactions
- Reaction equations and mole-based reasoning
- Energy, rates, equilibrium, and redox processes
- Organic compounds and biological chemistry
Does this chemistry ebook explain electronic configuration and periodic trends?
Yes. It covers electronic distribution, configurations, energy sublevels, periodic properties, and trends such as atomic radius and ionization energy.
Which chemical bonding types are covered in the ebook?
It explains ionic, covalent, and metallic bonding, plus bond polarity, intermolecular forces, Van der Waals forces, and hydrogen bonds.
Does the ebook include stoichiometry, chemical equilibrium, and electrochemistry?
Yes. These topics are included alongside reactions, solutions, thermochemistry, kinetics, acids and bases, and radioactivity.
This ebook/audiobook includes:
3 hours and 37 minutes of audio content
Digital certificate of course completion (Free)
Exercises to train your knowledge
100% free, from content to certificate
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