Water and Solubility
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Questions and Answers

What percentage of the human body is made up of water?

  • 30%
  • 50%
  • 80%
  • 67% (correct)

    • Which type of molecules are considered water-soluble?

  • Charged ions (correct)
  • Non-polar molecules
  • Oils and fats
  • Polar molecules

    • What type of substances are considered hydrophobic?

  • Water-soluble substances
  • Non-polar substances (correct)
  • Polar molecules
  • Charged ions

    • Which types of substances can cross cell membranes easily?

    <p>Lipid-soluble substances</p> Signup and view all the answers

    Why do lipid-soluble substances cross cell membranes easily?

    <p>Due to their non-polar nature</p> Signup and view all the answers

    What determines the solubility of substances in water?

    <p>Their polarity</p> Signup and view all the answers

    Water is a polar molecule with two oxygen atoms and one hydrogen atom.

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

    Non-polar molecules like oils and fats are water-soluble.

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

    Hydrophilic substances dissolve easily in water.

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

    Lipid-soluble substances can easily dissolve in plasma.

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

    Solubility in water is not important for medication delivery applications.

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

    Water makes up approximately 50% of the human body.

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

    _______ is an important inorganic molecule found in the human body, making up about 67% of our bodies.

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

    Solubility in water is determined by the polarity of substances, with _______ molecules and charged ions being water-soluble.

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

    Substances that dissolve easily in water are considered _______.

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

    Non-polar substances like oils and fats are _______.

    <p>lipid-soluble</p> Signup and view all the answers

    Understanding solubility is important for various applications such as medication delivery and transportation through the _______.

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

    Water-soluble substances can easily dissolve in the _______.

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

    Match the following terms with their correct definitions:

    <p>Solubility = Ability of a substance to dissolve in another substance Hydrophilic = Substances that dissolve easily in water Lipid-soluble = Non-polar substances like oils and fats that can dissolve in lipids Hydrophobic = Substances that do not dissolve easily in water</p> Signup and view all the answers

    Match the following statements with the correct descriptions:

    <p>Water-soluble substances = Can easily dissolve in the plasma Lipid-soluble substances = Can cross cell membranes due to their non-polar nature Polar covalent bonds = Formed within a water molecule between hydrogen and oxygen atoms Hydrogen bonds = Formed between separate water molecules due to polarity</p> Signup and view all the answers

    Match the following types of substances with their solubility characteristics:

    <p>Polar molecules = Water-soluble due to their polarity Charged ions = Water-soluble due to their charge interactions with water Non-polar molecules = Water-insoluble, such as oils and fats Hydrophilic substances = Dissolve easily in water due to their interactions</p> Signup and view all the answers

    Match the applications with the importance of understanding solubility:

    <p>Medication delivery = Dependent on solubility for effective drug distribution Transportation through the body = Relies on solubility for movement across membranes Plasma dissolution = Water-soluble substances dissolve easily for circulation Cell membrane crossing = Lipid-soluble substances can pass through this barrier</p> Signup and view all the answers

    Match the following descriptions with the correct terms:

    <p>Water composition in the body = About 67% of human bodies consist of this inorganic molecule Lipid-insoluble substances = Charged or polar substances that cannot dissolve in lipids Plasma dissolution ability = Characteristic of water-soluble compounds to dissolve in this bodily fluid Cell membrane permeability = Facilitated by lipid-soluble nature of certain substances</p> Signup and view all the answers

    Match the following statements with their accurate explanations:

    <p>Non-polar nature of lipids = Allows these substances to dissolve in other non-polar entities Importance of understanding solubility = Critical for various applications including drug delivery and bodily transport Water percentage in human body = Approximately 67% of our bodies is composed of this essential molecule Hydrophobic characteristics = Represented by substances that repel water and do not mix with it</p> Signup and view all the answers

    Study Notes

    • Water is an important inorganic molecule found in the human body, making up about 67% of our bodies.
    • Water is a polar molecule composed of two hydrogen atoms and one oxygen atom, forming polar covalent bonds within the molecule and hydrogen bonds between separate water molecules.
    • Solubility in water is determined by the polarity of substances, with polar molecules and charged ions being water-soluble, while non-polar molecules like oils and fats are water-insoluble.
    • Substances that dissolve easily in water are considered hydrophilic, while those that do not are hydrophobic.
    • Non-polar substances like oils and fats are lipid-soluble, while polar and charged substances are lipid-insoluble.
    • Understanding solubility is important for various applications such as medication delivery and transportation through the body.
    • Water-soluble substances can easily dissolve in the plasma, while lipid-soluble substances can cross cell membranes due to their non-polar nature.

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    Description

    Explore the significance of water as an inorganic molecule in the human body, its role as a polar molecule, and how solubility in water affects various substances. Learn about hydrophilic and hydrophobic properties, as well as the implications of solubility for medication delivery and transportation in the body.

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