Water Properties Mid-term Prep 2017

25 Questions | Total Attempts: 117

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Water Properties Mid-term Prep 2017

. Water Properties Mid-Term Prep


Questions and Answers
  • 1. 
    What forms when one substance dissolves another?
    • A. 

      Solution

    • B. 

      Solvent

    • C. 

      Dissolution

    • D. 

      Solute

  • 2. 
    A substance that dissolves another substance is called a ____________?
    • A. 

      Solvent

    • B. 

      Solution

    • C. 

      Dissolution

    • D. 

      Solute

  • 3. 
    Water is a universal solvent because:
    • A. 

      Water is polar and can dissolve more substances than any other liquid

    • B. 

      Solutes are not polar molecules

    • C. 

      Water is made up hydrogen and oxygen atoms

    • D. 

      Water has a neutral pH

  • 4. 
    What is adhesion?
    • A. 

      Waters ability to stick to other materials

    • B. 

      Waters ability to stick to itself

    • C. 

      Covalent bonds in water

    • D. 

      Capillary Action

  • 5. 
    What is an atom?
    • A. 

      The smallest part of an element that is a basic unit of matter

    • B. 

      The unit measure of an element

    • C. 

      Elements that make up molecules

    • D. 

      Neutrons in the nucleus

  • 6. 
    The atoms of each element have a unique number of protons in their nuclei. This unique number of protons is called the:
    • A. 

      Atomic number

    • B. 

      Atomic mass

    • C. 

      Subatomic particles

    • D. 

      Nucleus

  • 7. 
    The sum of an atom's neutrons and protons is called its:
    • A. 

      Atomic number

    • B. 

      Atomic mass

    • C. 

      Subatomic particles

    • D. 

      Nucleus

  • 8. 
    Choose the term or terms that best completes the statement: A molecule of water is made up of two atoms of ______________combined with 1 atom of _______________.
    • A. 

      Hydrogen, oxygen

    • B. 

      Oxygen, hydrogen

    • C. 

      Nitrogen, oxygen

    • D. 

      Oxygen, carbon

  • 9. 
    Choose the term that best completes the statement: The term ____________ is applied to any substance that cannot be made simpler without changing its chemical make-up.
    • A. 

      Element

    • B. 

      Atom

    • C. 

      Molecule

    • D. 

      Substance

  • 10. 
    Identify Hydrogen's slight charge in a water molecule.
    • A. 

      Hydrogen has a slight positive charge

    • B. 

      Hydrogen has a slight negative charge

    • C. 

      Hydrogen has a slight neutral charge

    • D. 

      Hydrogen has both positive and negative charges, that's why they're usually in pairs.

  • 11. 
    Choose the terms that best complete the statement: Identify the subatomic particle charges:
    • A. 

      Protons (+) positive, Neutrons are neutral, electrons (-) negative

    • B. 

      Protons are neutral, neutrons are the nucleus, electrons (-) negative

    • C. 

      Protons (-) negative, neutrons (+) positive, electrons (-) negative

    • D. 

      Protons (+) positive, neutrons (-) negative, electrons are neutral

  • 12. 
    Why does water have a high specific heat?
    • A. 

      Water has a high specific heat because of cohesion. This high heat capacity is due to the presence of hydrogen bonds between neighboring water molecules.

    • B. 

      Water has a high specific heat because it is a universal solvent.

    • C. 

      Water has a high specific heat because oxygen and hydrogen are cohesive.

    • D. 

      Water has a high specific heat because of hydrogen's ionic bonding.

  • 13. 
    Water exists in three states. Water's change of state is directly related to_________________ (one word) which is a measurement of the average speed of ________________(one word).
    • A. 

      Temperature, molecules

    • B. 

      Density, condensation

    • C. 

      Pressure, evaporation

    • D. 

      Heat, transpiration

  • 14. 
    What is a hydrocarbon?
    • A. 

      A molecule made up of hydrogen and carbon micelles

    • B. 

      A molecule of hydrogen and carbon, like those that make up waxes and oils

    • C. 

      A water molecule that bonds with carbon

    • D. 

      A soap molecule of hydrogen and carbon

  • 15. 
    What is a micelle?
    • A. 

      A cluster of soap molecules

    • B. 

      A hydrophobic end of a soap molecule

    • C. 

      Soap polarity

    • D. 

      A hydrophilic end of a soap molecule

  • 16. 
    What is a molecule?
    • A. 

      Two or more atoms held together by covalent bonds. The smallest particle of a covalently bonded substance with all the properties of that substance

    • B. 

      Two or more atoms held together by ionic bonds. The smallest particle of an ionically bonded substance with all the properties of that substance.

    • C. 

      Two or more atoms in an element.

    • D. 

      Two or more elements in a solution.

  • 17. 
    What is a valence electron?
    • A. 

      Electrons in the outer cloud of an atom

    • B. 

      A negatively charge ion

    • C. 

      A positively charge ion

    • D. 

      Ionically bonded electrons

  • 18. 
    What is an emulsion?
    • A. 

      A mixture of liquids that do not dissolve in each other. A condition where one liquid is suspended within another liquid which it is not soluble.

    • B. 

      When one liquid repels another and is neutral.

    • C. 

      When a solute dissolves in a solvent.

    • D. 

      When a liquid solidifies.

  • 19. 
    What is electronegativity?
    • A. 

      How many electrons are in a valence.

    • B. 

      The strength of an atoms' electrons.

    • C. 

      The electrical charge of a polar molecule.

    • D. 

      The exchange of electrons in ionic bonding.

  • 20. 
    What is hydrophilic?
    • A. 

      When a molecule repels water

    • B. 

      When a molecule is attracted to water

    • C. 

      When a molecule is a micelle

    • D. 

      When a molecule is ionically bonded

  • 21. 
    What is polarity?
    • A. 

      Oppositely charged ends (+,-) of a molecule

    • B. 

      Charged particles

    • C. 

      Cations and anions

    • D. 

      Protons and electrons

  • 22. 
    What is salinity?
    • A. 

      The amount of salt in water

    • B. 

      Waters ability to stick to itself

    • C. 

      The ability of water to stick to other material

    • D. 

      How easily salt dissolves in water

  • 23. 
    What are covalent bonds?
    • A. 

      Covalent bonds form when atoms of elements combine to share electrons, forming new substances.

    • B. 

      Covalent bonds form when molecules of different substances combine

    • C. 

      Covalent bonds form when atoms of elements combine to share neutrons and protons, forming new substances.

    • D. 

      Covalent bonds form when atoms of elements combine to share a nucleus, forming new substances.

  • 24. 
    Choose the best response to complete this statement: What is an elements' relationship to an atom?
    • A. 

      Elements are composed of atoms that are made of identical particles

    • B. 

      Elements are composed of atoms of different kinds of particles

    • C. 

      Elements combine to make atoms

    • D. 

      Atoms are made up of subatomic particles

  • 25. 
    What property of water helps regulate the rate at which air changes temperature?
    • A. 

      Specific heat

    • B. 

      Evaporation

    • C. 

      Condensation

    • D. 

      Specific gravity

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