June 2022 Chemistry Regents Questions 11-20 Question Preview (ID: 59692)


Use Your Knowledge Of Chemistry To Answer All Questions In The Data Set. You Will Need Your Chemistry Reference Tables And A Calculator To Answer Some Of The Questions. Good Luck. TEACHERS: click here for quick copy question ID numbers.

Which sample at STP has the same chemical properties as 10. grams of Al(s) at STP?
a) 10. grams of Si(s)
b) 10. grams of Na(s)
c) 5 grams of Al(s)
d) 5 grams of Mg(s)

Which sample of matter can not be broken down by a chemical change?
a) antimony
b) ethanol
c) methane
d) water

Based on Table F, which 10.-gram sample, when thoroughly mixed with 1 liter of water at room temperature, forms a heterogeneous mixture?
a) ammonium chloride, NH4Cl
b) potassium iodide, KI
c) silver bromide, AgBr
d) sodium nitrate, NaNO3

Compared to a 1.0 M NaCl(aq) solution at 1.0 atm, a 2.0 M NaCl(aq) solution at 1.0 atm has
a) a lower boiling point and a lower freezing point
b) a lower boiling point and a higher freezing point
c) a higher boiling point and a lower freezing point
d) a higher boiling point and a higher freezing point

Which list includes three forms of energy?
a) temperature, chemical, thermal
b) temperature, thermal, alkalinity
c) electromagnetic, nuclear, chemical
d) electromagnetic, alkalinity, nuclear

Under which conditions of pressure and temperature is a real gas most like an ideal gas?
a) low pressure and low temperature
b) low pressure and high temperature
c) high pressure and low temperature
d) high pressure and high temperature

Which sample of argon gas has the same number of atoms as a 100.-milliliter sample of helium gas at 1.0 atm and 300. K?
a) 50. mL at 1.0 atm and 300. K
b) 50. mL at 0.5 atm and 300. K
c) 100. mL at 0.5 atm and 300. K
d) 100. mL at 1.0 atm and 300. K

Which process is a chemical change?
a) condensation of H2O(g)
b) synthesis of MgO(s)
c) evaporation of C2H5OH(l)
d) sublimation of CO2(s)

Which property is determined by the structure, arrangement, and interactions of the molecules of a substance at a given temperature and pressure?
a) atomic radius
b) half-life
c) formula mass
d) physical state

A collision between reactant particles is most likely to result in a reaction when the particles have proper orientation and proper
a) charge
b) energy
c) mass
d) radius

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