Abeka Chemistry Test 11 fully solved exam study guide (100% accurate expert solutions)download to pass

SHORT ANSWER I: the process iron undergoes in the reaction Fe³⁺(aq) + 3 e⁻ → Fe(s) reduction* always occurs at the cathode reduction* Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen involves a gain of electrons reduction* involves a loss of electrons oxidation* Always occurs at the anode oxidation* the process zinc undergoes in the reaction Zn(s) → Zn²⁺(aq) + 2 e⁻ oxidation* MULTIPLE CHOICE I: To what does the term transuranium elements specifically refer? elements beyond uranium in the periodic table What is the source of the vast majority of a person's exposure to nuclear radiation? natural sources What force binds protons and neutrons to each other to form the nucleus of an atom? the strong nuclear force The term nuclear mass defect refers to: The mass of an atom is less than the total mass of its individual subatomic particles. What is the amount of fissionable material at a given density required to sustain a chain reaction? critical mass What is the amount of energy necessary to break up a nucleus into its component nucleons? binding energy The type of radiation list that is ranked by decreasing penetrating ability (most penetrating to least penetrating) is ________. gamma, beta, alpha In nuclear chemistry, the term activity refers to _______. the amount of rate of decay occurring in a radioactive substance What is a device that uses magnetic and electric fields to accelerate charged particles to energies of several megaelectron volts? particle accelerator What type of nuclear reaction is also called a thermonuclear reaction? nuclear fusion What is a long chain of radioactive isotopes ending with a stable isotope, such as the decay chain that begins with ²³⁵U and ends with ²⁰⁷Pb? radioactive active series what is a characteristic of all radioactive decay? converting one nuclide into another Units of radiation exposure: rad, sievert, rem In nuclear chemistry, this unit can be used to measure the activity of a substance. becquerel What is a device that converts the potential energy of a spontaneous redox reaction into electric current? voltaic cell In electrolysis, what is an electric current passed through a solution to accomplish? bring about a nonspontaneous redox reaction FACTS: A list of metal arranged by their relative ease of oxidation is called and ACTIVITY* series. A type of nuclear reactor that produces more fissionable fuel than is used is called a BREEDER* reactor. The flow of electric charge through a substance is called electric CURRENT*. In a redox reaction, the substance that causes reduction is called the REDUCING AGENT*. Forming a thin coating of metal on an object by immersing the object in an electrolyte solution and applying an electric current is called ELECTROPLATING*. A substance that dissociates or ionizes in water to produces ions that can conduct an electric current is called an ELECTROLYTE*. The greater the activity of a radioactive substance, the SHORTER* the substance's half-life. The stronger the acid or base an electrolyte solution contains, the GREATER* is the solution's ability to conduct electricity. Standard electrode potentials are measured relative to the element HYDROGEN*. An electric current flowing through an electrolyte solution consists of moving IONS*. MULTIPLE CHOICE: This best explains why reduction and oxidation must occur simultaneously. The electron lost in oxidation must be acquired somewhere else What is the missing product in the nuclear equation below? ²⁴¹/₉₅Am ＋ ⁴/₂He → ________ ＋ 2 ¹/₀n Bk What is the oxidation number of Mn in KMmO₄? ＋7 This is not a redox reaction. 2 K₂SO₄ ＋ Pb(NO₃)₂ → PbSO₄ ＋ 2 KNO₃ This equation represents a half-reaction. Fe(s) → Fe²⁺(aq) ＋ 2 e⁻ MATCHING I: Match the description with the radiation produced in the reaction ¹⁷⁰/₇₈Pt → ¹⁶⁶/₇₆Os ＋ _________ alpha radiation does not change atomic number of parent atom gamma radiation produced in the reaction ⁶⁰/₂₇Co* → ⁶⁰/₂₇Co ＋ _______ gamma radiation