PAP 4/27- 4/28 Quiz Solubility
Quiz by Veronica Nickols
High School
Chemistry (2017)
Texas Essential Knowledge and Skills (TEKS)
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14 questions
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- Q1What will happen to the ability of a gas to dissolve in a liquid if the temperature increases?The solubility of the gas is not affectedThe solubility of the gas increasesThe solubility of the gas increases or decreasesThe solubility of the gas decreases30s112.35.c.10.f
- Q2Which of the following would result in being able to dissolve a greater amount of gas in a solution?Heat the gas and solutionDecrease the pressure of the solutionMake the gas an eectrolyteCool the gas and solution30s112.35.c.10.f
- Q3Which of the following would decrease the rate of solution when dissolving a solid in water?Stir the solution after mixingCrush the Solid before mixingRaise the temperature of the solutionUse a single cube of solid30s112.35.c.10.f
- Q4Which of the following would increase the rate of dissolution of a solid in solution?Dry up the solventStir the solid and the solutionCool the solid and solutionCool only the solid30s112.35.c.10.f
- Q5Which of the following statements makes a valid conclusion regarding the graph above?At 10 degrees C, potassium nitrate has a greater solubility when compared to the solubility of sodium chlorideAt 30 degrees C, sodium chloride has a greater solubility when compared to the solubility of potassium chlorideTemperature has a greater effect on the solubility of potassium nitrate compared to sodium chlorideTemperature has a greater effect on the solubility of sodium chloride compared to potassium nitrate30s112.35.c.10.f
- Q6A student attended an event at a traditional tea room that offered sugar cubes instead of sugar packets. She added two sugar cubes to a cup of hot tea. After she finished drinking the tea, she was surprised to see two small chunks of undissolved sugar at the bottom of her cup. All the sugar dissolves in a tea of the same temperature when added from a packet. Which of the following BEST explains why sugar remains undissolved from cubes but not from packets?Unlike the packet, the cube is compacted and large in size so not all sugar molecule surface areas contact the teaAdding a cube decreases the likelihood of stirring the tea, where as adding a packet reminds people to stirThe temperature of the tea with cubes was lower than the one with packetsUnlike the teacup with cubes, tea with packets is served in a bigger cup that allows for more tea30s112.35.c.10.f
- Q7While stirring, solid table salt is added to a beaker of water until no more salt will dissolve and salt crystals are visible at the bottom of the beaker. When the beaker is heated, the crystals dissolve. The effect of heat in this situation -increased the polarity of the salt waterincreased the solubility of the salt crystalsreacted with salt so it became watermelted the salt crystals into a liquid30s112.35.c.10.f
- Q8A solution that contains the maximum amount of solute that is soluble at a given temperature is said to be a -unsaturated solutionsaturated solutionsupersaturated solutiondilute solution30s112.35.c.10.e
- Q9A solution in which more solute is dissolved than is typically soluble at a given temperature is -dilutedsupersaturatedunsaturatedsaturated30s112.35.c.10.e
- Q10Refer to the graph. 90 grams of sodium nitrate (NaNO3) is put into 100 grams of water and stirred. The final mixture has a temperature of 20 degrees C. About how many grams of the sodium nitrate dissolved?7380882330s112.35.c.10.b
- Q11Why is water sometimes called the "universal solvent"?The adhesion level in H2O is very highMany substances dissolve in H2OThe hydrogen bonding of H2O is very lowThe density of H2O is 1.0 g/cm330s112.35.c.10.a
- Q12Students are asked to make statements about the solubility graph above. Which student does the best job of communicating the general features of the graph?Student A: Most salts require 100 grams of water in order to dissolve completelyStudent C: The solubility of most salts increases with increasing temperatureStudent D: Most curves show a decreasing slope as the temperature risesStudent B: Table salt has the average solubility of all salts30s112.35.c.10.b
- Q13Refer to the graph above. In order to have a saturated solution, how many grams of potassium nitrate, KNO3, need to be dissolved in 100 grams of water at 20 degrees C?60100302030s112.35.c.10.b
- Q14Which two factors must be considered when predicting whether two substances will dissolve in each other?number of bonds and molecular shapenumber of bonds and size of the moleculestype of bonds and size of the moleculesType of bonds and molecular shape30s112.35.c.10.b
