How do nonpolar covalent bonds differ from polar covalent bonds?
What will be an ideal response?
In a nonpolar covalent molecule, the nonmetals sharing electrons have nearly equal electronegativities. The electrons are shared equally. In a polar covalent molecule, the more electronegative nonmetal does not share electrons equally with other nonmetal atoms participating in the bond.
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Which of these synovial joints does not have at least one rounded or convex surface?
A. Pivot B. Condylar C. Plane D. Ball and socket E. Saddle
Which is the mechanism of enzyme functioning?
A) Enzymes raise the activation energy of a reaction. B) Enzymes remove hydrogen ions. C) Enzymes lower the activation energy of a reaction. D) Enzymes replace hydrogen ions. E) Enzymes promote complementary base-pairing.
Press firmly to learn what your breasts feel like. A firm ridge in the lower curve of each breast is normal." This step for BSE is not done unless you think you might have a breast lump.
a. true b. false
Hemoglobin is found only in leukocytes
a. True b. False Indicate whether the statement is true or false