Chemistry Basics
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Questions and Answers

What are the basis of human life on earth?

  • Organic compounds (correct)
  • Atoms
  • Matters
  • Molecules
  • What happens when a substance changes from a liquid to a solid state?

  • It bursts
  • It solidifies (correct)
  • It melts
  • It disintegrates
  • What is the element that is the backbone of organic molecules?

  • Carbon (correct)
  • Oxygen
  • Hydrogen
  • All of them
  • What is the term for the self-linking capacity of carbon?

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

    What type of polymer is phenolic resins?

    <p>Thermosetting polymer</p> Signup and view all the answers

    What is the process used to deposit one metal over another metal?

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

    What is the term for organic matter that can be burned to produce energy?

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

    What is an example of a starch crop biomass feed?

    <p>Sugar cane</p> Signup and view all the answers

    What type of fuel gives enormous amount of energy?

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

    Which of the following is an example of a neutral refractory?

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

    What is the pH range of a basic solution?

    <p>Greater than 7</p> Signup and view all the answers

    What is the atomic mass of Na?

    <p>23</p> Signup and view all the answers

    What is the correct formula for silver nitrate?

    <p>AgNO3</p> Signup and view all the answers

    What is the chemical formula for ethanol?

    <p>C2H5OH</p> Signup and view all the answers

    What is the saponification of a fat or oil done with?

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

    How can the problem of solid waste disposal be reduced?

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

    What type of industry produces metal as waste?

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

    Which of the following can be recycled many times?

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

    What is bio ethanol also called as?

    <p>Methylated spirit</p> Signup and view all the answers

    What type of glass is manufactured in the highest amount?

    <p>Soda-lime</p> Signup and view all the answers

    Which is the first city to establish a system of waste removal?

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

    Metal is produced as waste in industries like which of the following?

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

    Soaps are based on which type of detergents?

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

    Study Notes

    Chemical Properties and Reactions

    • When a substance bursts, it solidifies.
    • Carbon has a self-linking capacity called catenation.
    • Organic compounds are the basis for human life on earth.

    Polymers

    • Phenolic resins are a type of thermosetting polymer.
    • Vulcanized rubber exhibits a lower value of molar cohesion.

    Electroplating

    • Electroplating is the process of depositing one metal over another metal.
    • Zinc is plated on steel, and the anode is made up of zinc.
    • Electroplating is used in industries like electroplating.

    Industrial Production

    • On an industrial scale, sodium metal is prepared by electrolysis of fused NaCl.
    • Bio-mass often refers to organic matters.
    • Starch crops are an example of biomass feed, such as corn.

    Biofuels

    • Bio-ethanol is decanted alcohol, also known as methylated spirit.
    • Recycling can reduce the problem of solid waste disposal.

    Metals and Waste Management

    • Metal is produced as waste in industries like electroplating.
    • Athens was the first city to establish a system of waste removal.
    • Soaps are oil-based, soapy detergents.
    • Aluminum can be recycled many times.

    Chemistry Formulas

    • The atomic mass of Na is 23.
    • The saponification of a fat or oil is done with NaOH.
    • Methane is represented by CH4.
    • Ethanol is represented by C2H5OH.

    Fuels and Energy

    • Nuclear fuels give an enormous amount of energy.
    • Dolomite is an example of a neutral refractory.

    Acidity and pH

    • If pH value is greater than 7, the solution is basic.
    • If pH value is less than 7, the solution is acidic.
    • Silver nitrate is represented by AgNO3.

    Waste Management and Electrolytes

    • Recycling can reduce the problem of solid waste disposal.
    • Metal is produced as waste in industries like electroplating.
    • As an electrolyte, water is a weak electrolyte.
    • Soda-lime glass is manufactured in the highest amount.
    • Aluminum can be recycled many times.

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    Test your knowledge of fundamental chemistry concepts, including properties of elements and compounds.

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