Semester 1 Review Packet

____ 26. An ion that consists of one charged atom is called a(n)a. anion c. monoatomic ionb. cation d. polyatomic ion____ 27. An ion that consists of many atoms that share a charge is called a(n)a. anion c. monoatomic ionb. cation d. polyatomic ion____ 28. The electrons involved in the formation of a chemical bond are calleda. dipoles c. Lewis electronsb. s electrons d. valence electrons____ 29. In most compounds, atoms of main-group elements form bonds so that the number of electrons inthe outermost energy levels of each atom isa. 2 c. 8b. 6 d. 10____ 30. The elements of the ____________ group have full outer energy levels without forming bonds.a. main c. alkali metalb. noble gas d. alkaline-earth metal____ 31. Molecular (covalent) compounds __________________ than ionic compounds.a. have higher boiling points c. have lower melting pointsb. are more brittle d. are harder____ 32. The partial charges formed in polar compounds are calleda. dipoles c. Lewis chargesb. ions d. valence electrons____ 33. VSEPR theory is used to determinea. which elements will bond. c. the shape of a molecule.b. the type of bond formed. d. the charge of a transition metal.____ 34. Why do atoms form chemical bonds?a. To gain energy c. To move fasterb. To become more stable d. To increase vibration____ 35. What is an ionic bond?a. the atoms share electrons evenly c. the atoms share electrons, but notevenlyb. the atoms take or give electrons d. the atoms give or take protons____ 36. Ionization energy isa. the energy needed to add an electron. c. the energy needed to remove anelectron.b. the energy needed to form a bond. d. the energy needed to break a bond.____ 37. The trend for Ionic Radius across the period wasa. Increase c. Decrease, sharply Increase thenDecreaseb. Decrease d. Stays constant.2008