CHM 114 Final Review – Flashcards
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| The symbol for the element magnesium is __________ |
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| Mg |
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| Predict the empirical formula of the ionic compound that forms from magnesium and fluorine |
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| MgF2 |
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| Each p-subshell can accommodate a maximum of ________ electrons |
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| 6 |
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| [Ar]4s^2,3d^10,4p^3 is the electron configuration of a(n) ____________ atom |
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| As |
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| The first ionization energies of the elements _________ as you go from left to right across the periodic table, and __________ as you go from the bottom to the top of a group in the table |
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| Increase, Increase |
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| Based on the octet rule, magnesium forms a ____________ ion |
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| Mg^2+ |
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| For a given arrangement of ions, the lattice energy increases as ionic radius ____________ and as ionic charge ___________. |
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| Deceases, Increases |
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| According to VSEPR theory, if there are four electron domains in the valence shell of an atom, they will be arranged in a(n) ____________ geometry. |
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| Tetrahedral |
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| The molecular geometry of the SiH2Cl2 molecule is ________ |
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| tetrahedral |
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| The process of doping silicon with phosphorus produces a __________ which can greatly ___________ the intrinsic conductivity. |
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| n-type semiconductor, increase |
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| An unsaturated solution is one that ______________. |
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| has a concentration lower than the solubility |
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| If the rate law for the reaction 2A+3B-> products in first order in A and second order in B, then the rate law is _________ |
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| k[A][B]^2 |
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| What is the correct indication of the relationship between the entropy of a system and the number of different microstates, W, in the system? |
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| S=k*ln(W) |
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| What is the oxidation number of potassium in KMnO4? |
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| +1 |
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| In a voltaic cell, electrons flow from the _______ to the ___________. |
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| anode, cathode |
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| The kinetic-molecular theory predicts that pressure rises as the temperature of a gas increases because _______________ |
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| Both the gas molecules collide more frequently with the wall and the gas molecules collide more energetically with the wall |
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| What is a correct statement of Boyle's law involving P and V |
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| PV=constant |
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| ________ and __________ reside in the atomic nucleus |
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| Protons, neutrons |
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| How many protons and neutrons does the isotope (40/18) Ar have? |
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| 18 protons and 22 neutrons. |
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| ___________ is an intensive property. |
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| Density |
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| Elements in Group 2A of the periodic Table are known as the _____________. |
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| Alkaline Earth Metals. |
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| Potassium is a ____________ and chlorine is ____________ |
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| Metal, nonmetal |
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| ___________ typically form ions with a 1+ charge (group on Periodic Table) |
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| Alkali metals |
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| 1 nanometer = _______ centimeters |
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| 10^-7 |
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| The temperature of 15C is ________ in Kelvins. |
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| 288 |
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| A small amount of salt dissolved in water is an example of a __________ mixture. |
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| Homogeneous |
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| The charge on manganese in the salt MnF3 is __________. |
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| 3+ |
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| Predict the empirical formula of the ionic compound that forms from sodium and fluorine |
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| NaF |
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| The correct name for SrO is _______________ |
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| strontium oxide |
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| Oxidation is the |
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| Loss of electrons |
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| A ____________ (delta)H corresponds to an ___________ process. |
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| Negative, exothermic; Positive, endothermic |
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| There are _______ orbitals in the third shell. |
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| 9 |
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| The n=1 shell contains ________ p orbitals. All the other shells contain _____ p orbitals |
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| 0,3 |
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| The 3p subshell in the ground state of the atomic xenon contains _____ electrons |
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| 6 |
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| [Ar]4s^2,3d^10,4p^3 is the electron configuration of a(n) _____ atom |
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| As |
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| The electron configuration of the S^2- ion is ___________. |
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| [Ne]3s^2,3p^6 |
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| Electronegativity ____________ from left to right within a period and _____________ from top to bottom within a group in the periodic table. |
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| Increases, decreases |
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| The ion ICl4^- has ______ valence electrons. |
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| 36 |
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| In ionic bond formation, the lattice energy or ions ________ as the magnitude of the ion charges ________ and the radii ________ |
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| Increase,increase,decrease |
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| According to VSEPR theory, if there are five electron domains in the valence shell of an atom, they will be arranged in a(n) __________ geometry. |
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| Trigonal bipyramidal |
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| The electron-domain geometry and molecular geometry of iodine trichloride are ________ and ______, respectively. |
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| Trigonal bipyramidal, T-shaped |
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| The ease with which the charge distribution in a molecule can be distorted by an external electrical field is called the __________. |
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| Polarizability. |
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| It is determined that a reaction rate increased by a factor of 9 when the concentration of B was tripled. The reaction is ___________ order in B. |
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| Second |
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| In general, as temperature goes up, reaction rate _____________ |
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| Goes up regardless of whether the reaction is exothermic or endothermic |
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| At equilibrium, |
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| the rates of the forward and reverse reactions are equal |
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| How is the reaction quotient used to determine whether a system is at equilibrium? |
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| The reaction is at equilibrium when Q=K(eq) |
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| What is the oxidation number of potassium in KMnO4? |
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| +1 |
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| The electrode at which oxidation occurs is called the ____________ |
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| anode |
