Textbook Question
Which of the following is not an organic compound?
a. Monosaccharide
b. Formaldehyde
c. Water
d. Steroid
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3. Chemical Principles of Microbiology
Introduction to Chemical Bonding
3:02 minutesProblem 1
Textbook Question
List three main types of chemical bonds, and give an example of each.
Verified step by step guidance1
Identify the three main types of chemical bonds commonly discussed in microbiology and chemistry: ionic bonds, covalent bonds, and hydrogen bonds.
Explain that an ionic bond is formed when one atom donates an electron to another, resulting in oppositely charged ions that attract each other. An example is the bond between sodium (Na⁺) and chloride (Cl⁻) ions in sodium chloride (NaCl).
Describe a covalent bond as a bond where atoms share one or more pairs of electrons to achieve stability. An example is the bond between two hydrogen atoms (H) in a hydrogen molecule (H₂).
Clarify that a hydrogen bond is a weaker interaction that occurs when a hydrogen atom covalently bonded to an electronegative atom (like oxygen or nitrogen) is attracted to another electronegative atom. An example is the hydrogen bonding between water molecules (H₂O).
Summarize by listing each bond type alongside its example to reinforce understanding.
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Video duration:
3mKey Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Ionic Bonds
Ionic bonds form when one atom transfers electrons to another, creating positively and negatively charged ions that attract each other. This bond typically occurs between metals and nonmetals. An example is sodium chloride (NaCl), where sodium donates an electron to chlorine.
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06:07
Ionic Bonds
Covalent Bonds
Covalent bonds involve the sharing of electron pairs between atoms, usually nonmetals, to achieve stability. These bonds can be single, double, or triple depending on the number of shared electron pairs. Water (H2O) is an example, where oxygen shares electrons with hydrogen atoms.
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04:28Covalent Bonds
Hydrogen Bonds
Hydrogen bonds are weak attractions between a hydrogen atom covalently bonded to an electronegative atom (like oxygen or nitrogen) and another electronegative atom. They are crucial in stabilizing structures like DNA and proteins. An example is the hydrogen bonding between water molecules.
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