CHEM103/ CHEM 103 Module 5 – General Chemistry I with Lab | Portage Learning | Latest Exam Questions & Answers | Verified Study Material | Grade A

CHEM103/ CHEM 103 Module 5 – General Chemistry I with Lab | Portage Learning | 2026 2027 Latest Exam Questions & Answers | Verified Study Material | Grade A 2026 / 2027 Academic Year Q: ionic bonds Answer two oppositely charged ions (2Na + Cl₂ = 2Na⁺+2Cl⁻) Q: metals tend to ______ electrons Answer lose Q: nonmetals tend to ______ electrons Answer gain Q: covalent bonds Answer share at least one pair of electrons so both atoms have 8 valence electrons Q: 2 types of covalent bonds Answer polar, nonpolar Q: polar covalent bond Answer unequal sharing of electrons, difference in electronegativity 0.5-1.6 Q: nonpolar covalent bond Answer electrons are shared equally, electronegativity difference less than 0.5 Q: ionic bond Answer electronegativity difference greater than 1.6 Q: number of valence electrons = Answer element's group number Q: lewis structures of molecules steps Answer 1. find total # of valence electrons 2. place least negative atom in the center (H always on outside) 3. place pair of electrons between each element 4. position the rest of electrons Q: in lewis structures of polyatomic ions, the ______ is included Answer charge Q: tetrahedral electron geometry Answer surrounded by 4 groups of electrons Q: triangular planar electron geometry Answer surrounded by 3 groups of electrons Q: linear molecular electron geometry Answer surrounded by 2 groups of electrons Q: molecular shapes Answer - tetrahedral: 4 outer atoms - triangular pyramid: 3 outer atoms - bent: 2 outer atoms Q: polar molecules have ______ Answer + and - charged centers Q: nonpolar molecules have ______ Answer no charged regions due to either: absence of polar bonds or equal distribution of electrons in polar bonds (symmetrical) Q: μ is ______ Answer measure/expression of the polarity of a molecule Q: nonpolar μ = Answer 0 Q: polar μ = Answer greater than 0 Q: symmetrical shapes = Answer tetrahedral, linear, triangular planar Q: nonmetals ____ electrons because of LOWER electronegativity Answer gain Q: metals ____ electrons because of HIGHER electronegativity Answer lose Q: polar bonds electronegativity difference Answer 0.5-1.6 Q: NONpolar bonds electronegativity difference Answer 0.5 Q: What atom goes in the center of Lewis structures? Answer LEAST electronegative atom Q: O prefers (lewis structures) Answer 2 bonds and 2 lone pairs Q: N prefers Answer 3 bonds and 1 lone pair Q: tetrahedral geometry Answer central atom with 4 surrounding electron groups Q: central atom with 3 surrounding electron groups Answer triangular planar Q: central atom with 2 surrounding groups of electrons Answer linear Q: hybridization Answer groups of electrons minus 1 Q: ionic bond Answer metal and nonmetal Q: soluble in water Answer ionic or polar Q: Boiling point ranking: Answer 1. metallic or ionic (highest) 2. H-bonding 3. polar 4. non polar (lowest)