Review Team Review Chapter 6 and 7 • . Chapter 6 • When at atom loses an electron, it forms a(n) • A. Anion • B. Cation • C. Polyatomic Ion • D. Neutral Ions Chapter 6 • The charge on a chloride ion in AlCl3 is • A. 1+ • B. 3+ • C. 1• D. 3- Chapter 6 • Which pair has the same electron configuration? • A. Chloride and Argon • B. Cl- and Argon• C. Chlorine and Argon • D. Cl+ and Argon Chapter 6 • A chemical bond that forms when atoms share electrons is always ? • A. A polar bond • B. An ionic bond • C. A metallic bond • D. A covalent bond Chapter 6 • When two fluorine atoms share a pair of electrons the bond that forms is • A. A polar covalent bond • B. An ionic bond • C. A nonpolar covalent bond • D. A double bond Chapter 6 • The chemical formula for magnesium bromide is • A. MgBr • B. MgBr2 • C. Mg(II)Br2 • D. Mg2Br Chapter 6 • The compound with the formula SiCl4 • A. Silicon chloride • B. Silicon chlorine • C. Silicon (I) chloride • D. Silicon tetrachloride Chapter 6 • The attraction among water molecules is stronger than the attraction among • A. Sodium and chloride ions • B. Carbon dioxide molecules • C. Atoms in a polyatomic ion • D. Atoms in a diatomic molecule Chapter 6 • Which type of solid is likely to be the best conductor of electric current? • A. Ionic compound • B. Covalent compound • C. Metal Element • D. Nonmetal Element Chapter 6 • • • • • An alloy contains A. At least one metallic element B. At least one nometallic element C. Only metallic elements D. Only nometallic elements Chapter 7 • • • • • • • In an the equation; NaHCO3 + HCl NaCl + H20 + CO2 what are the reactants? A. NaHCO3 and HCl B. NaHCO3 and NaCl C. HCl and NaCl D. NaCl, H20, CO2 Chapter 7 • Which of the following is a statement of the law of conservation of mass? Mass is • A. Created but not destroyed • B. Destroyed but not created • C. Neither created or destroyed • D. Both created and destroyed Chapter 7 • The mass of a hydrogen atom is 1 amu, the mass of carbon is 12.0 amu. What is the molar mass of methane CH4? • A. 13 amu • B. 13 grams • C. 16 amu • D. 16 grams Chapter 7 • In what type of reaction does one reactant form two or more products? • A. Synthesis • B. Decomposition • C. Single Replacement • D. Double Replacement Chapter 7 • What particle is transferred from one atom to another in a redox reaction? • A. Electron • B. Neutron • C. Proton • D. Nucleus Chapter 7 • Which of the following is a single replacement reaction? • A. KOH + HCl KCl + H2O • B. 2Na +Zn(NO3)2 2NaNO3 + Zn • C. 2C2H6 + 7O2 4 CO2 + 6 H20 • D. H2O + CO2 H2CO3 Chapter 7 • How are reactions related to chemical bonds? • A. Reactant bonds broken, product • bonds formed • B. Neutron • C. Proton • D. Nucleus Chapter 7 • What type of reaction always releases energy? • A. Endothermic • B. Exothermic • C. Decomposition • D. Oxidation Reduction Chapter 7 • In general an increase in temperature does what to the reaction rate? • A. Increase • B. Decrease • C. Has no effect • D. Only acts as a catalyst Chapter 7 • What takes place at a chemical equilibrium? • A. Reactants form more quickly • B. Products form more quickly • C. Both stop forming • D. Both form at the same rate