Chemistry Study Notes

Overview of Matter and Chemical Change

  • Introduction to chemical principles using everyday examples (pizza, fireworks, frying an egg).

  • Exploration of chemical changes in the world around us.

  • Importance of understanding classifications and interactions of matter.

Unit Contents

  • Exploring Matter: 92

  • Changes in Matter: 99

  • What Are Elements?: 106

  • Classifying Elements: 116

  • The Periodic Table: 126

  • Chemical Compounds: 136

  • Chemical Reactions: 146

  • Reaction Rate: 153

Topics Overview

Exploring Matter

  • Surrounding Matter: Discusses common examples of matter, including air, clothing, and food.

  • Chemistry Definition: Chemistry is defined as the study of properties of matter and the changes matter undergoes.

  • Historical Context: Highlights early chemists and their equipment used to discover matter's properties.

Safety in Chemistry

  • Historical Safety Practices: Early chemists lacked modern safety equipment; some engaged in hazardous practices, such as tasting chemicals.

  • Canadian Nobel Prize Laureates: List of Canadian chemists who received the Nobel Prize, emphasizing their contributions to science:

    • Bertram Brockhouse (1994 Physics)

    • Michael Smith (1993 Chemistry)

    • Rudolph Marcus (1992 Chemistry)

    • Richard E. Taylor (1990 Physics)

    • Sidney Altman (1989 Chemistry)

    • John Polanyi (1986 Chemistry)

    • Henry Taube (1983 Chemistry)

    • David Hubel (1981 Medicine)

    • Gerhard Herzberg (1971 Chemistry)

    • Frederick Banting (1923 Medicine)

  • Modern Safety Protocols: Emphasizes importance of safety symbols, safety goggles, usage of correct procedures and equipment in the laboratory.

Workplace Hazardous Materials Information System (WHMIS)

  • Safety Symbols: Description of common WHMIS safety symbols (compressed gas, toxicity, flammable materials, corrosive materials, biohazards).

  • Importance of Safety Knowledge: Recognizing safety symbols in experiments to ensure proper handling of chemicals and materials.

Classifying Matter

  • Particle Model of Matter: Describes the attributes of matter, emphasizing:

    • Components: All matter consists of tiny particles that attract each other.

    • Movement: Particles are in constant motion; higher temperatures increase this motion.

    • Classification: Matter is classified as solids, liquids, and gases; further categorized into pure substances or mixtures.

  • Pure Substances vs. Mixtures: Each pure substance has a unique particle composition, while mixtures contain two or more particle types.

Mixture Classification

  • Homogeneous vs. Heterogeneous Mixtures:

    • Homogeneous mixtures (solutions): Uniform distribution of particles, cannot be visually distinguished (e.g., saltwater).

    • Heterogeneous mixtures: Non-uniform particle distribution; visible components (e.g., salad).

  • Subtypes of Heterogeneous Mixtures:

    • Ordinary Mechanical Mixtures: Visible particles (e.g., granite).

    • Suspensions: Particles will settle over time (e.g., flour in water).

    • Colloids: Particles are small but can scatter light (e.g., milk).

    • Emulsions: Colloids where liquids are dispersed in liquids (e.g., mayonnaise).

    • Tyndall Effect: Light scattering in colloids confirms their presence.

Practical Applications and Investigations

  • Hands-on Activities: Investigations exploring emulsifying agents, effects of different substances on mixtures, and safety practices in laboratories.

  • Research Component: Encouragement to research WHMIS symbols and safety equipment in personal labs and communities.

Conclusion

  • Reflection and Critical Thinking: Encourages the student to think critically about practical applications of chemistry in real life, laboratory safety, and chemical classifications.