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| 72441336 | Lewis models with an unshared electron pair are ______. | polar | |
| 72441337 | Molecules with polyatomic ions bond ________. | ionically | |
| 72441338 | Symbol for tungsten | W | |
| 72441339 | Metallic bonds are characterized by _______ electrons, which allow them to be good conductors of electricity. | delocalized | |
| 72441340 | As ____________ are heated, electrons are excited and move away from the ground state position into an excited state. As the electrons fall back into the ground state, energy is emitted, often in the form of LIGHT. | noble gases | |
| 72441341 | In a phase change diagram, plateaux represent _______. | phase change transitions | |
| 72441342 | In a phase change diagram, the first plateau represents the substance's _____________. | freezing point | |
| 72441343 | In a phase change diagram, the final plateau represents a state in which the substance exists as ____________. | both liquid and gas | |
| 72441344 | In a phase change diagram, the final line extending upward from the final plateau represents a state in which the substance exists as ___________. | only gas | |
| 72441345 | In a phase change diagram for water, the _________ represents the equation H2O(g) -> H2O(l). | final plateau | |
| 72441346 | A ___________ solution is an unstable solution defined as one that is holding more solute than is theoretically possible. This type of solution is created by heating the solution and adding solute at a high temperature. | supersaturated | |
| 72441347 | A solution in which particles will settle on standing is known as a ____________. Cannot be maintained forever. | suspension | |
| 72441348 | Solutions that contain particles that stay suspended and have the ability to scatter light (Tyndall effect) are known as _______. | colloids | |
| 72441349 | A solution that holds the maximum amount of solvent that it can theoretically hold at a given temperature and pressure is called a ________ solution, and is at dynamic equilibrium. | saturated | |
| 72441350 | When two aqueous solutions are mixed and a precipitate is formed, a _________ reaction takes place. | double replacement | |
| 72441351 | A solid piece of silver metal reacts with oxygen in the air and tarnishes: what kind of reaction is taking place? | synthesis | |
| 72441352 | A reaction in which one reactant produces two or more products is a __________ reaction. (H2O->H2+O2) | decomposition | |
| 72441353 | Iron rusting is a _________ reaction. | synthesis | |
| 72441354 | When one element reacts with one compound to produce a different element and a different compound, this is known as a _______ reaction. Na + H2O->NaOH + H2 | single replacement | |
| 72441355 | Higher pressure = ______er boiling point. | low | |
| 72441356 | True (T) or false (F)? The temperature of a substance always increases as heat energy is added to the system. | F | |
| 72441357 | True (T) or false (F)? Chlorine is always diatomic. | T | |
| 72441358 | Larger molecules usually have a _____er boiling point. | high | |
| 72441359 | The larger a molecule, the more likely its electron cloud is to __________ and establish _________ intermolecular forces. | polarize dispersion | |
| 72441360 | True (T) or false (F)? n general, within a family, boiling point increases with increasing molecular mass because the larger a molecule, the more likely its electron cloud is to polarize and establish dispersion intermolecular forces. | T | |
| 72441361 | Spontaneity is a measure of _________, while the state of being exothermic is a measure of ______. | free energy enthalpy | |
| 72441362 | The equilibrium constant (will/won't) change with temperature. | will | |
| 72441363 | If the reaction is endothermic, the value of K will _____ with an increase in temperature. | increase | |
| 72441364 | If the reaction is exothermic, the value of K will _____ with an increase in temperature. | decrease | |
| 72441365 | The value of K at equilibrium is often a number __ 1. | < | |
| 72441366 | Energy is lost when ______ bonds are formed. | covalent | |
| 72441367 | Ionic compounds may dissolve in any _____ or ____ substance, according to the "like dissolves like" rule. | polar ionic | |
| 72441368 | When an ionic solid dissolves in water, this is called a ________ reaction. Water molecules actually surround the ions of the ionic compound, pull them apart, and hold them in place within the solution. | hydration | |
| 72441369 | True (T) or false (F)? O2 contains a double bond. | T | |
| 72441370 | The molecular geometry of a CO2 molecule is _____. | linear (two double-bonds) | |
| 72441371 | True (T) or false (F)? All molecules having only three atoms form bond angles of 180Ë. | F (H2O) | |
| 72441372 | Covalent compounds are usually gases, liquids, or solids that have ____ melting points. | low | |
| 72441373 | Ionic compounds are solid _______ with very ___ melting points. | crystals high | |
| 72441374 | Only _____ covalent compounds dissolve in polar solvents. | polar | |
| 72441375 | covalent compounds that dissolve release ______ molecules into solution rather than ______. | neutral ions | |
| 72441376 | Electrical conductivity requires that _____________ are released on melting to form a liquid or dissolved to form a solution. | charged ions | |
| 72441377 | Molar density at STP is (# moles)(molar mass)/_________. | 22.4 L | |
| 72448634 | K is dependent on _________. | temperature | |
| 72452105 | The sodium salt of a weak acid is ________ when dissolved in water. | basic | |
| 72452106 | When determining ionization energy, an ion's charge does/doesn't play a factor. | does | |
| 72452107 | The hybridization associated with the central atom of a molecule in which all the bond angles are 120˚ is ______, because it has three sites of electron density. | sp2 | |
| 72452108 | The strength of the acid formed when hydrogen halides are dissolved in water is dependent on the _____________ and the ______________ in the molecule. | size of the molecule strength of the bond | |
| 72452109 | When the pressure of the system is increased, the volume is decreased, and equilibrium tends to shift in the direction that _____________________. | produces fewer moles | |
| 72452110 | _________ reduce to lowest terms before stating the answer. | Always | |
| 72452111 | Percent yield formula | actual / theoretical yield |
