MICR 3033 Exam 1 Questions with Complete Solutions

Describe a hydrogen bond. Correct Answer-positively charged hydrogen is attracted to negatively charged atoms, intermolecular forces hold these bonds together A carbon atom contains six protons and six neutrons. What are its atomic number, atomic weight, and how many electrons does it have? How many additional electrons must it add to fill its outermost shell? Correct Answer-atomic number: 6 atomic weight: 12 electrons: 6 additional electrons: 4 How is an ionic bond formed? Correct Answer-One atom completely loses an electron while the other completely gains that electron creating two charged molecules What are the differences between an ionic and covalent bond? Correct Answer-Ionic bond: donates electrons, creates charged molecules, very polar Covalent: shares electrons, equally distributed charges, not very polar Why are polar covalent bonds and the resulting permanent dipoles so important in biology? Correct Answer-Stabilize p