Concept explainers
a.
To explain: Whether nitrogen molecules contain non-polar or polar covalent bonds.
Introduction: Chemical bond is a force through which two or more atoms join together to form a molecule. Ionic bond, metallic bond, and covalent bond are the three main types of
b.
To explain: Whether ammonia molecules contain non-polar or polar covalent bonds.
Introduction: A covalent bond is formed by sharing of valence electrons by two atoms to complete their outermost or valence shell to form a molecule. The number of covalent bonds an atom can make depends on the number of electrons it needs to completely fill its valence shell.
c.
To explain: Whether methane molecules contain non-polar or polar covalent bonds.
Introduction: Chemical bonds link atoms together in a particular arrangement that defines the type of molecules. It is an attractive force that arises between two atoms to unite atoms as a molecule. Electronegativity difference between the atoms determines the type of bond they can form in between them.
d.
To explain: Whether formaldehyde molecules contain non-polar or polar covalent bonds.
Introduction: The separation of charge into different positive and negative regions is called polarity. The polarity of a bond increases with an increasing difference in electronegativity. The electronegativity is defined as the ability of an atom to draw electrons away from another atom.
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Study Guide for Campbell Biology
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- Which of the following bonds is/are likely to be polar (choose all that apply)? a. H-H b. O-H c. C-H d. O-Oarrow_forwardin dehydration reaction between phosphate (derived from phosphoric acid) and glycerol (a sugar alcohol) accompanied with the removal of a water molecule, what chemical bond holds them together in a phospholipid molecule? A. Ether Alcohol B. Thioester Bond C. Acid Anhydride/Phosphoanydride bond D. Ester Bondarrow_forwardA carbon atom contains six protons and six neutrons.A. What are its atomic number and atomic weight?B. How many electrons does it have?C. How many additional electrons must it add to fill its outermost shell? How does this affect carbon’s chemical behavior?D. Carbon with an atomic weight of 14 is radioactive. How does it differ in structure from nonradioactive carbon? How does this difference affect its chemical behavior?arrow_forward
- Gd(III) needs to be strongly chelated when used in medical imaging applications because the free ion can displace Ca(I) in protein active sites and disrupt biological function. What is the best atom to Coordinate these metal ions from amino acids? A. Oxygen B. Nitrogen C. Sulfur D. Carbonarrow_forwardWhat kind of hydroxyl groups do carbohydrates have? (More than one answer is possible.) A. secondary B. tertiary C. primary D. quaternaryarrow_forwardBased on the picture, which of the following functional groups is found in molecules #8? A. Amino B. Phosphate C. Methyl D. Thiolarrow_forward
- Which of the following compounds would be most soluble in carbon tetrachloride, CCl4? a. NH3 d. CH3OHb. H2O e. C6H6c. HClarrow_forwardA (-) charge in the transition state can be stabilized by a catalyst, which is usually a(n): a. Anion b. Base Oc. Nucleophile Od. Acidarrow_forwardLook at the structure of stearic acid as well as oleic acid and answer the following questions: a.Write which of these two is saturated fatty acid. b.Which of these two has a higher melting points. c.Which of these two will change the color of bromine water to clear. d.Name the unsaturated fatty acid using both delta and Omega nomenclaturearrow_forward
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