August 2024 Chemistry Regents Questions 11-20 Question Preview (ID: 63415)


The Questions In This Practice Exam Are Thoughtfully Crafted To Assess Your Knowledge And Skills. They Cover A Range Of Topics And Formats, Offering A Valuable Opportunity For Self-assessment And Preparation. TEACHERS: click here for quick copy question ID numbers.

Which term represents the strength of attraction that an atom has for the electrons in a chemical bond?
a) entropy
b) electronegativity
c) first ionization energy
d) heat of reaction

Which phrase describes a sample of NaCl(s)?
a) a mixture that has constant composition and properties throughout
b) a mixture that varies in both composition and properties
c) a substance that has constant composition and properties throughout
d) a substance that varies in both composition and properties

Which substance contains only atoms with the same atomic number?
a) ammonia
b) selenium
c) methane
d) water

Differences in which property allow the separation of a mixture of 2-propanol and water by distillation at 1.0 atm?
a) boiling point
b) freezing point
c) solubility
d) electronegativity

At standard pressure, how do the freezing point and the boiling point of H2O() compare to the freezing point and the boiling point of 1.0 M KCl(aq)?
a) Both the freezing point and boiling point of H2O(l) are lower.
b) Both the freezing point and boiling point of H2O(l) are higher.
c) The freezing point of H2O(l) is lower, and the boiling point of H2O(l) is higher.
d) The freezing point of H2O(l) is higher, and the boiling point of H2O(l) is lower.

Which term represents a form of energy?
a) molarity
b) temperature
c) thermal
d) volume

Which sample of zinc has atoms with the highest average kinetic energy?
a) 5.0 g of Zn at 40.°C
b) 10. g of Zn at 30.°C
c) 15 g of Zn at 20.°C
d) 20. g of Zn at 10.°C

Under which conditions will a real gas behave more like an ideal gas?
a) high pressure and high temperature
b) high pressure and low temperature
c) low pressure and high temperature
d) low pressure and low temperature

According to the kinetic molecular theory, the particles of an ideal gas
a) constantly move in circular paths
b) have no attractive forces between them
c) do not transfer energy when the particles collide
d) are separated by small distances relative to their sizes

A reaction between two different gases is most likely to occur when the colliding molecules have the proper orientation and sufficient
a) charge
b) energy
c) mass
d) volume

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