Chemistry Topic 1 - Exploring Matter
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Questions and Answers

What does WHMIS stand for?

  • Workplace Hazardous Materials Information System (correct)
  • Workplace Hazardous Material Integration System
  • Workplace Health Management Information System
  • Workplace Health and Material Information System

    • Which of the following provides more detailed information on a substance?

  • Material Safety Data Sheets (MSDS) (correct)
  • Hazard Communication Standard
  • Product Safety Guide
  • Chemical Safety Program

    • What do HHPS symbols primarily indicate?

  • Household emergency preparedness
  • Household electrical safety
  • Household chemical interoperability
  • Hazards associated with household products (correct)

    • Which of the following WHMIS symbols indicates that a product may be poisonous over time?

    <p>Toxic symbol</p> Signup and view all the answers

    What should you consult for guidelines on handling dangerous chemicals?

    <p>Material Safety Data Sheets (MSDS)</p> Signup and view all the answers

    Which WHMIS symbol indicates a risk of explosion due to heat or pressure?

    <p>Explosive label</p> Signup and view all the answers

    What does the symbol indicating that a product may burn at relatively low temperatures signify?

    <p>Flammability hazard</p> Signup and view all the answers

    Which of the following statements is true regarding WHMIS and HHPS?

    <p>They provide safety information for handling hazardous materials.</p> Signup and view all the answers

    What is a characteristic of particles in a substance?

    <p>They are always the same in any given substance.</p> Signup and view all the answers

    What happens to particles when they gain more energy?

    <p>They move faster and increase their movement.</p> Signup and view all the answers

    What can be inferred about the spaces among particles?

    <p>Spaces among particles vary with temperature.</p> Signup and view all the answers

    What type of force exists among particles?

    <p>Attractive forces, which can be strong or weak.</p> Signup and view all the answers

    What is one of the methods for classifying matter?

    <p>By state</p> Signup and view all the answers

    Which of the following is NOT a safety rule in the lab?

    <p>Always smell substances directly from the container.</p> Signup and view all the answers

    Which of the following statements is true about the properties of matter?

    <p>Different substances are made of different types of particles.</p> Signup and view all the answers

    Which hazard represents materials that can cause harm upon contact or ingestion?

    <p>Harmful or fatal materials</p> Signup and view all the answers

    Identifying the dangers of caustic materials and explosive reactions falls under which target?

    <p>B6</p> Signup and view all the answers

    What is indicated by the term 'compressed flammable gas'?

    <p>A gas that can catch fire easily while in high pressure.</p> Signup and view all the answers

    Which of the following describes a mechanical mixture?

    <p>A mixture where substances maintain their properties</p> Signup and view all the answers

    What effect does strong attraction among particles have?

    <p>It tends to keep particles close together, influencing states of matter.</p> Signup and view all the answers

    Which of the following actions is permissible in the science lab?

    <p>Following all written and verbal instructions</p> Signup and view all the answers

    What is the purpose of classifying matter by composition?

    <p>To distinguish between elements and compounds</p> Signup and view all the answers

    Which lab safety rule should be followed regarding glassware?

    <p>Report all spills and accidents to the teacher.</p> Signup and view all the answers

    In the context of chemistry, what distinguishes a solution from a pure substance?

    <p>A solution has a uniform composition.</p> Signup and view all the answers

    What characteristic distinguishes solids from liquids?

    <p>Solids have a definite volume.</p> Signup and view all the answers

    What behavior describes gas particles?

    <p>They move in random directions.</p> Signup and view all the answers

    Which of the following is a characteristic of pure substances?

    <p>They retain consistent melting and boiling points.</p> Signup and view all the answers

    What defines a compound in chemistry?

    <p>It is a chemical combination of two or more elements.</p> Signup and view all the answers

    How do liquid particles behave compared to those in solids?

    <p>They move more freely.</p> Signup and view all the answers

    What must be true for an element to be classified as a pure substance?

    <p>It is one of the simplest forms of matter.</p> Signup and view all the answers

    What occurs when heating a compound such as water?

    <p>It can be separated into its elements.</p> Signup and view all the answers

    What distinguishes gases from liquids in terms of their arrangement?

    <p>Gas particles fill the volume of their container.</p> Signup and view all the answers

    What defines a homogenous mixture?

    <p>A mixture that looks the same throughout and cannot be filtered.</p> Signup and view all the answers

    Which of the following is an example of a homogenous mixture?

    <p>Saltwater solution</p> Signup and view all the answers

    What happens to the boiling, freezing, and melting points of mixtures compared to pure substances?

    <p>They vary and are not fixed.</p> Signup and view all the answers

    Which characteristic does NOT describe a homogenous mixture?

    <p>It scatters light when a beam is passed through it.</p> Signup and view all the answers

    Which of the following statements about heterogenous mixtures is true?

    <p>They can be separated by physical means.</p> Signup and view all the answers

    In a homogenous mixture, what will happen if you shine a light through it?

    <p>The light will pass through without scattering.</p> Signup and view all the answers

    When combining sugar with water to create a solution, which property does not change?

    <p>The solution has a uniform composition.</p> Signup and view all the answers

    Which of these is an example of a heterogenous mixture?

    <p>Sand mixed with iron filings</p> Signup and view all the answers

    What type of mixture is created when oil is mixed with water?

    <p>Colloid</p> Signup and view all the answers

    Which of the following is not classified as a solution?

    <p>Oil and water</p> Signup and view all the answers

    What type of matter classification is primarily focused on in the station activity?

    <p>Solution</p> Signup and view all the answers

    In the lab example, which of the following mixtures would be a colloid?

    <p>Mayonnaise</p> Signup and view all the answers

    How should students behave while conducting the station activity?

    <p>As if they are playing golf</p> Signup and view all the answers

    What safety measure is emphasized when handling glassware?

    <p>Using goggles</p> Signup and view all the answers

    Which substance combination represents a mixture rather than a solution?

    <p>Oil, water and sugar</p> Signup and view all the answers

    Which of the following options is considered a characteristic of solutions?

    <p>They can remain clear</p> Signup and view all the answers

    Study Notes

    Topic 1 - Exploring Matter

    • Do Now: Check and correct uniform; pick up a copy of the unit notes.
    • Today's Agenda: Rational Numbers quizzes back; Chemistry - Topic 1; Chemistry Classification Stations; Homework.
    • Topic 1 Targets:
      • Distinguish between pure substances, solutions, and mixtures.
      • Identify and apply three methods of classifying matter: by state, composition, and property.
      • Identify dangers of caustic materials and potentially explosive reactions.

    Lab Safety Rules

    • Do not taste anything in the lab.
    • Tie back long hair and roll up sleeves.
    • Use safety goggles if instructed.
    • Carefully follow all written and verbal instructions.
    • Smell substances by fanning the odor towards you (wafting).
    • Never pour liquids into containers held in your hand.
    • Report spills and accidents to the teacher and clean them up immediately following instructions.
    • Never look into test tubes and other containers from the top; always look through the sides.
    • Do not use cracked or broken glassware.
    • Understand all safety symbols (WHMIS and HHPS) on chemicals.

    WHMIS

    • WHMIS stands for Workplace Hazardous Materials Information System.
    • HHPS stands for Hazardous Household Product Symbols
    • Provides important safety information on potentially dangerous chemicals (how to handle them).
    • Detailed information on substances can be found in Material Safety Data Sheets (MSDS).
    • Specific labels and symbols warn about hazards and precautions.

    WHMIS Symbols

    • (Images of symbols are not included here). See provided document for details

    The Particle Model of Matter

    • All matter is made up of tiny particles.
    • The particles in a substance are the same, but different substances are made of different particles.
    • There are attractive forces between particles (strong or weak).
    • The particles are always moving. More energy = faster movement.
    • There are spaces between particles

    States of Matter

    • (Diagram of states of matter including solid, liquid, and gas are not included here).

    Pure Substance

    • A pure substance can be an element from the periodic table.
    • Elements are the simplest substances, that cannot be broken down by physical or chemical means.
    • Examples: Pure gold, sodium.
    • Pure substances have fixed freezing, melting, and boiling points.

    Compounds

    • Compounds are pure substances that are chemical combinations of two or more elements.
    • They can be broken down into their component elements by chemical reactions (heat or electricity).
    • Example: H2O = two hydrogen atoms + one oxygen atom

    Classifying Matter

    • Use color, size, design, and feel.
    • Vehicles: wheels and drive (trucks, buses, bikes)
    • Other aspects: horsepower, style, year, brand, model, number of wheels, color, size/weight, engine size.

    Homogenous vs Heterogeneous Mixtures

    • Matter that is not a compound or element may be a homogenous or heterogeneous mixture.
    • Mixtures contain two or more pure substances with variable boiling, freezing, and melting points.
    • Example of homogenous mixtures (solutions): Salt water (lower freezing point than pure water), fully dissolved sugar in water, fully dissolved drinks.
    • Example of heterogeneous mixtures include: suspensions (large particles that settle out - oil & water), colloids (particles that stay suspended - whipped cream), and emulsions (liquids mixed not dissolving - mayonnaise).

    Station Activity

    • 15 stations with substances.
    • Identify each substance and its classification (solution, mixture).
    • Be careful handling glassware, wear goggles if necessary.
    • Move carefully from station to station (like playing golf or viewing art).

    Homework

    • Read Topic 1 (Pages 92-98).
    • Complete the formative worksheet.
    • Complete the WHMIS and Safety Worksheet.
    • Do textbook questions (page 98 #1-5).

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    Topic 1 - Exploring Matter PDF

    Description

    Dive into the fundamentals of chemistry with this quiz focused on exploring matter. You'll learn to distinguish between pure substances, solutions, and mixtures while applying various classification methods. Emphasizing lab safety, this quiz ensures you understand the importance of proper techniques in the laboratory.

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