AP Chemistry Jeopardy Worksheet

Which of the following represents a pair of isotopes?

• (A)

• (B)

• (C)

• (D)

Tags

NGSS.HS-PS1-8

The elements I and Te have similar average atomic masses. A sample that was believed to be a mixture of I and Te was run through a mass spectrometer, resulting in the data above. All of the following statements are true. Which one would be the best basis for concluding that the sample was pure Te?

• Te forms ions with a −2 charge, whereas I forms ions with a −1 charge.

• Te is more abundant than I in the universe.

• I consists of only one naturally occurring isotope with 74 neutrons, whereas Te has more than one isotope.

• I has a higher first ionization energy than Te does.

A 2 L container will hold about 4 g of which of the following gases at 0°C and 1 atm?

• SO₂

• N₂

• CO₂

• NH₃

Which of the following best helps to account for the fact that the F⁻ ion is smaller than the O²⁻ ion?

• F⁻ has a larger nuclear mass than O²⁻ has.

• F⁻ has a larger nuclear charge than O²⁻ has.

• F⁻ has more electrons than O²⁻ has.

• F⁻ is more electronegative than O²⁻ is.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following accounts for the observation that the pH of pure water at 37°C is 6.8?

• At 37°C water is naturally acidic.

• At 37°C the autoionization constant for water, Kw, is larger than it is at 25°C.

• At 37°C water has a lower density than it does at 25°C; therefore, [H⁺] is greater.

• At 37°C water ionizes to a lesser extent than it does at 25°C

Tags

NGSS.HS-PS1-5

The standard reduction potentials of the half-reactions associated with a galvanic cell are listed in the table. Which of the following statements identifies the electrode that increases in mass as the cell operates, and correctly explains why?

• The Ag electrode, because Ag⁺(aq) in the solution is reduced to form Ag(s).

• The Ag electrode, because Ag has a greater molar mass than Ni has.

• The Ni electrode, because Ni is chemically more reactive than Ag is.

• The Ni electrode, because Ni²⁺(aq) is reduced at a faster rate than Ag⁺(aq) is.

Which Ag species will have the highest concentration in the equilibrium system shown below, and why?

• Ag⁺(aq), because K_eq3 = 4

• Ag⁺(aq), because K_eq1 < K_eq2

• Ag(NH₃)₂⁺(aq), because K_eq3 = 1.6 × 10⁷

• Ag(NH₃)₂⁺(aq), because K_eq1 < K_eq2

Tags

NGSS.HS-PS1-5

A quantity of 10,000 J of thermal energy is transferred to four different substances. In which of the following experiments could the greatest mass of the given substance undergo the indicated change?

• Melting ice at 0°C to form liquid water at 0°C (ΔH_fus = 330 J/g)

• Boiling liquid acetone at 56°C to form acetone vapor at 56°C (ΔH_vap = 540 J/g)

• Increasing the temperature of liquid glycerin from 20°C to 120°C (Specific heat = 2.4 J/(g·°C))

• Increasing the temperature of solid copper from 0°C to 200°C (Specific heat = 0.40 J/(g·°C))

Tags

NGSS.HS-PS3-4

What is the molar solubility in water of Ag₂CrO₄? (The K_sp for Ag₂CrO₄ is 8 × 10⁻¹².)

• 
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• 
• 

At standard temperature and pressure, a 0.50 mol sample of H₂ gas and a separate 1.0 mol sample of O₂ gas have the same

• average molecular kinetic energy

• average molecular speed

• volume

• density