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IB Grade 9 Chemistry
Explore and master the fundamentals of IB Grade 9 Chemistry
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.Chapter 1
Chapter 1: The Particulate Nature of Matter and States of Matter
The chapter explores the particulate nature of matter, describing its composition, states, and transformations through the Kinetic Particle Theory. It emphasizes the behavior of solids, liquids, and gases, highlighting their unique properties and how they are influenced by temperature and pressure. Additionally, it categorizes matter into elements, compounds, and mixtures, explaining methods to separate mixtures based on their physical properties.
Chapter 2
Chapter 2: The Building Blocks of Matter: Atoms, Elements, and the Periodic Table
The chapter explores the fundamental building blocks of matter, focusing on atoms and their organization within the Periodic Table. It traces the historical evolution of atomic theory, introducing key figures such as Dalton, Thomson, Rutherford, and Bohr, while detailing the structure of atoms, including protons, neutrons, and electrons. The chapter emphasizes the significance of atomic number, mass number, and isotopes, as well as the predictive qualities of the Periodic Table in understanding the elements and their properties.
Chapter 3
Chapter 3: Chemical Bonding and Structure
Chemical bonding revolves around the principle of electron stability, with atoms striving for noble gas configurations through ionic and covalent bonding. Ionic bonding involves electron transfer between metals and non-metals, resulting in the formation of cations and anions, while covalent bonding entails the sharing of electrons between non-metals. The type of bonding significantly influences the physical properties of compounds, such as melting points, electrical conductivity, and solubility.
Chapter 4
Chapter 4: Chemical Reactions and Equations: Transforming Matter
The chapter explores the dynamics of chemical reactions, distinguishing between physical and chemical changes. It introduces chemical equations as a way to represent reactions, emphasizing the law of conservation of mass and the importance of balancing equations. Categorization of chemical reactions into synthesis, decomposition, single and double displacement, and combustion is discussed, alongside the concept of stoichiometry to quantify reactants and products in chemical processes.
Chapter 5
Chapter 5: Acids, Bases, and Salts
The chapter explores the fundamental concepts of acids, bases, and salts, highlighting their characteristics, reactions, and significance in everyday life. It provides an in-depth look at the properties and behaviors of these chemicals, including their respective roles in neutralization reactions and various applications in industry and daily activities.
Chapter 6
Module 6: Quantitative Chemistry - The Language of Chemical Measurement
Quantitative chemistry focuses on measuring and quantifying substances in chemical reactions, with the mole serving as a fundamental unit for this purpose. By bridging the microscopic scale of atoms and molecules with measurable quantities, chemists employ molar mass to link mass to moles and the number of particles. Stoichiometry provides a framework for calculating the relationships between reactants and products in chemical reactions, utilizing balanced equations to derive mole and mass ratios essential for accurate chemical accounting.
Chapter 7
Chapter 7: Energy Changes in Chemical Reactions
Chemical reactions involve significant energy changes, either releasing or absorbing energy. Exothermic reactions release heat, often observable through temperature increases or production of light, while endothermic reactions absorb heat, resulting in cooler surroundings. Understanding these energy changes, activation energies, and the role of catalysts is crucial for controlling and optimizing chemical processes in various applications.
Chapter 8
Chapter 8: Chemistry in Society and Environmental Chemistry
Chemistry influences every aspect of our lives and plays a critical role in shaping the environment through both positive advancements and negative impacts. This chapter examines how human activities contribute to environmental issues such as pollution, climate change, and resource depletion, and emphasizes the necessity for sustainable practices. It explores the principles of green chemistry, the ethical implications of chemical technologies, and the potential of chemistry to address global challenges through innovation.