Grade 8 Chemical Changes Assessment Prep
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Questions and Answers

What determines the properties of different solutions?

  • The electrons and protons in the atoms (correct)
  • The color of the solution
  • The type of container used for the solution
  • The number of atoms in the solution

    • Which of the following substances is not flammable and will extinguish a flame?

  • Oxygen
  • Argon (correct)
  • Hydrogen
  • Nitrogen

    • What is the main component that determines the unique properties of substances?

  • Electrons (correct)
  • Neutrons
  • Molecules
  • Protons

    • Which of the following substances exhibits flammability?

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

    What property can be used to differentiate substances based on their reaction with fire?

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

    Which of the following substances is not a good conductor of electricity?

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

    What determines the chemical identity and unique properties of a molecule?

    <p>The number, type, and arrangement of atoms in the molecule</p> Signup and view all the answers

    How are substances made from different types of atoms?

    <p>Substances are made from atoms, where the amount of electrons and protons determines the element and its properties</p> Signup and view all the answers

    What influences the properties of Beryllium?

    <p>Its hexagonal crystal structure</p> Signup and view all the answers

    How can atoms be combined to create molecules with unique properties?

    <p>Through the number and arrangement of atoms within the molecules</p> Signup and view all the answers

    What determines the isotope of an atom?

    <p>The number of neutrons in the atom's nucleus</p> Signup and view all the answers

    How does the arrangement of molecules influence their chemical and physical properties?

    <p>It impacts how substances behave in chemical and physical processes</p> Signup and view all the answers

    What is the role of chemical bonds in creating molecules with unique properties?

    <p>Chemical bonds form molecules and influence their properties</p> Signup and view all the answers

    Which factor contributes to the physical characteristics of a substance?

    <p>The type and arrangement of atoms within the substance</p> Signup and view all the answers

    What influences how substances behave in chemical and physical processes?

    <p>The arrangement of atoms in a molecule</p> Signup and view all the answers

    What determines the unique properties of a molecule?

    <p>The arrangement and types of atoms within the molecule</p> Signup and view all the answers

    What component of atoms determines the properties of different solutions?

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

    Which substance is not flammable and can extinguish a flame?

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

    Which property can be used to differentiate substances based on their reaction with fire?

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

    What determines the chemical identity and unique properties of a molecule?

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

    Which factor contributes to the physical characteristics of a substance?

    <p>Arrangement of molecules</p> Signup and view all the answers

    What influences how substances behave in chemical and physical processes?

    <p>Arrangement of atoms</p> Signup and view all the answers

    What is the role of the arrangement of atoms within a molecule in determining its properties?

    <p>It influences the chemical and physical properties</p> Signup and view all the answers

    How does the number, type, and arrangement of atoms in a molecule contribute to its unique properties?

    <p>They determine the chemical identity and impact unique properties</p> Signup and view all the answers

    Which factor influences how substances behave in chemical and physical processes?

    <p>The arrangement of molecules in an atom</p> Signup and view all the answers

    What determines the chemical identity and unique properties of a molecule?

    <p>The arrangement of atoms</p> Signup and view all the answers

    Which statement about the arrangement of atoms within a molecule is true?

    <p>It affects how substances behave in chemical and physical processes</p> Signup and view all the answers

    What determines the isotope of an atom?

    <p>The number of neutrons</p> Signup and view all the answers

    Which statement about atoms and molecules is true?

    <p>Molecules can form properties through various ways</p> Signup and view all the answers

    How do substances behave in chemical and physical processes?

    <p>Based on their arrangement of molecules in an atom</p> Signup and view all the answers

    What is the role of bonds in creating molecules with unique properties?

    <p>They influence reactivity and physical properties</p> Signup and view all the answers

    How does the neutron contribute to determining the isotope of an atom?

    <p>By changing the mass number of the atom</p> Signup and view all the answers

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