AP CHEM 2ND QUARTER TEST REVIEW

Oxides of which of the following elements would most likely be basic? (a) Ba (b) Al (c) Si (d) S

(a) Ba

Einstein reasoned that when light struck the surface of a metal, electrons would leave the metal with a particular energy (photoelectric effect). Which of the following would increase the energy of these ejected electrons? (a) changing the color of the light from red to blue (b) changing the color of the light from violet to yellow (c) increasing the intensity of the light (d) using the radio waves rather than visible light

(a) changing the color of the light from red to blue

An atom of an element is found to be highly reactive, has a large first ionization energy, a small atomic radius and is often found in nature as a diatomic gas. Which electron configuration might match this element? (a) 1s^2 2s^2 2p^6 3s^2 (b) 1s^2 2s^2 2p^6 3s^2 3p^5 (c) 1s^2 2s^2 2p^6 3s^2 3p^6 (d) 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^3

(b) 1s^2 2s^2 2p^6 3s^2 3p^5

What is the wavelength of an electromagnetic wave whose frequency is 3.64 x 10^7 s^-1? (a) 2.998 x 10^8 m (b) 8.24 m (c) 4.55 m (d) 23.9 m

(b) 8.24 m

Which of the following atoms would have the largest first ionization energy? (a) Na (b) Cl (c) Al (d) S

(b) Cl

Which of the following elements is likely to have the greatest difference between the first and second ionization energies? (a) Argon (b) Rubidium (c) Oxygen (d) Fluorine

(b) Rubidium

Gamma rays have very short wavelengths while microwaves have relatively long wavelengths. Compare the two types of radiation in terms of frequency and energy. (a) gamma rays have higher frequency and lower energy than microwaves (b) gamma rays have higher frequency and higher energy than microwaves (c) gamma rays have lower frequency and lower energy than microwaves (d) gamma rays have lower frequency and higher energy than microwaves

(b) gamma rays have higher frequency and higher energy than microwaves

Which of the following processes is true regarding the formation of a cation from a neutral atom? (a) the cation is larger in size than the neutral atom (b) it is more difficult to remove one electron from a cation than from a neutral atom (c) the number of core electrons decreases (d) the net charge of the species becomes negative

(b) it is more difficult to remove one electron from a cation than from a neutral atom

Which rule states when drawing an orbital diagram of an element, add one electron to all orbitals of a sublevel first before pairing them? (a) Aufbau Principle (b) Pauli's Exclusion Principle (c) Hund's Rule (d) Schrodinger's Theorem

(c) Hund's Rule

Which of the following include members of the same isoelectronic series? (a) B^-, Cl^-, F^-, I^- (b) K^+, Ca^2+, Sc^2+, Ti^2+ (c) N^-3, Mg^2+, Ne, F^- (d) Al^3+, P^3-, Cl^-, Ar

(c) N^-3, Mg^2+, Ne, F^-

Which of the following atoms has the smallest atomic radius? (a) Li (b) B (c) N (d) O

(d) O

It is impossible to know the precise values of two specific properties of an electron at the same time. Which properties are they? (a) mass and location (b) mass and momentum (c) momentum and charge (d) momentum and location

(d) momentum and location

A beam of red light shining on a piece of gold metal for one second did not cause any electrons to be emitted from the metal. Which is the most probable reason? (a) the amplitude of the red light was too low (b) the light was not shining on the piece of metal for a sufficient time period (c) the red light had a wavelength that was too short to cause the photoelectric effect (d) red light does not have enough energy to remove any electrons from the surface of gold

(d) red light does not have enough energy to remove any electrons from the surface of gold

Which of the following correctly compares periodic properties of two elements and provides an accurate explanation for that difference? (a) the first ionization energy of Al is greater than that of B because Al has a larger nuclear charge than B does (b) the first ionization energy of F is greater than that of O because O has a higher electronegativity than F has (c) the atomic radius of Ca is larger than that of Mg because the valence electrons in Mg experience more shielding than the valence electrons in Ca do (d) the atomic radius of Cl is smaller than that of S because Cl has a larger nuclear charge than S does

(d) the atomic radius of Cl is smaller than that of S because Cl has a larger nuclear charge than S does