Module Two Chem 101 Problems Exam Questions And Answers 100% Solved 2024

Module Two Chem 101 Problems Exam Questions And Answers 100% Solved 2024 Carbon dioxide is a _____ compound composed two types of _____ atoms. A. Molecular, metal B. ionic, metalloid C. molecular, nonmetal D. ionic, metal - answerC. molecular, nonmetal Carbon dioxide is a molecular compound composed of two oxygen atoms with covalent double bonds to a central carbon atom. Both C and O are to the right of the "staircase" on the periodic table, as nonmetals. Classify the following compounds as ionic or covalent: KCl, CrCl₃, Cl₂O. A. ionic, covalent, covalent B. ionic, ionic, covalent C. covalent, covalent, ionic D. ionic, covalent, ionic - answerB. ionic, ionic, covalent Ionic bonds occur between a metal and a nonmetal. Covalent bonds occur between two nonmetals What is the formula for an ionic compound containing Ba²⁺ ions and Cl⁻ ions? A. BaCl B. Ba2Cl C. BaCl2 D. BaCl3 E. Ba3Cl - answerC. BaCl2 Two ions of chlorine are needed to balance out the positive charge on the barium ion What type of bonding is present in C₁₂H₂₂O₁₁? A. covalent bonds only B. ionic bonds only C. both covalent and ionic bonds D. neither covalent or ionic - answerA. Covalent bonds only C₁₂H₂₂O₁₁ is a covalent compound. All atoms are held together by the sharing of electrons, which are covalent bonds. Which of the following compounds contains a polyatomic ion? A. CO2 B. MgCO3 C. SiO2 D. CO - answerB. MgCO3 A polyatomic ion is composed of multiple covalently bonded atoms. CO₃²⁻ is a polyatomic ion composed of a carbon atom and three oxygen atoms. Predict the chemical formula for the ionic compound formed by Au³⁺ and HSO₃⁻ - answerAu(HSO3)3 Predict the chemical formula for the ionic compound formed by NH₄⁺ and PO₄³⁻ - answer(NH4)3PO4 Predict the chemical formula for the ionic compound formed by the elements Ba and S - answerBaS Predict the chemical formula for the ionic compound formed by the elements Sr and Cl - answerSrCl2 Which atom in the Br-F molecule has a partial negative charge (δ⁻)? A. F B. Br C. Both D. Neither - answerA. F Partial charges are determined by the relative electronegativities of the atoms in a molecule; the more electronegative atom, which is F, has a partial negative charge. Which atom in the C-Br bond has a partial positive charge (δ⁺)? A. Br B. C C. Both D. Neither - answerB. C Partial charges are determined by the relative electronegativities of the atoms in a bond; the less electronegative atom, which is C, has a partial positive charge. Which atom in the molecule ClF would have a partial positive charge (δ⁺)? A. Cl B. F C. Both D. Neither - answerA. Cl Partial charges are determined by the relative electronegativities of the atoms in a molecule; since you are looking for the atom with a positive partial charge, you should choose the atom that is the least electronegative. This is Cl. Which atom in the N-H bond has a partial negative charge (δ⁻)? A. H B. N C. Both D. Neither - answerB. N Partial charges are determined by the relative electronegativities of the atoms in a molecule; since you are looking for the atom with a positive negative charge, you should choose the atom that is the most electronegative. This is N. Which atom in the P-Cl bond has a partial positive charge (δ⁺)? A. Cl B. P C. Both D. Neither - answerB. P Partial charges are determined by the relative electronegativities of the atoms in a bond; the less electronegative atom, which is P, has a partial positive charge. Which of the following compounds does NOT exhibit covalent bonding? A. CO2 B. CO C. CoCl2 D. HCOOH E. Na2CO3 - answerC. CoCl2 Covalent bonds occur between two nonmetals. CoCl₂ contains a metal and a nonmetal ion. These ions are held together by ionic bonding. Based on their positions in the periodic table, which of the following bonds is the most polar? A. O-F B. C-F C. B-F D. F-F - answerC. B-F Polar bonds occur between two