1. Which of the Following Behaviors Allows One to Distinguish Between Rutherford S And

UNIT 2 1. Which of the following behaviors allows one to distinguish between Rutherford’s and Thompson’s atomic model? a. Atoms are electrically neutral. b. Atoms are mostly empty space. c. Atoms contain neutrons. d. Atoms are indivisible.

2. Identify which part of Dalton’s Atomic Theory has been proven incorrect? a. Matter is made up of atoms. b. Atoms are indivisible. c. Atoms can be rearranged to form new compounds. d. Atoms cannot be created or destroyed.

1. Identify which of the following statements is correct concerning an atom? a. Its subatomic particles carry no electrical charges. b. The number of protons equals the number of neutrons. c. The number of neutrons equals the number of electrons. d. The number of protons equals the number of electrons.

2. Compare the numbers of neutrons in a Carbon-12 and Carbon-14? a. C-14 has 2 more neutrons than C-12. b. C-14 has the same number of neutrons as C-12. c. C-12 has 2 more neutrons than C-14. d. Cannot be determined from the information given.

UNIT 3 1. Identify which of the following types of electromagnetic radiation has the greatest frequency:

A. Infrared B. Microwaves C. Ultraviolet D. X-rays

2. Identify the wavelength of light emitted when an electron transitions from n=4 to n=2.

A. 1282 nanometers B. 656 nanometers C. 486 nanometers D. 103 nanometers 1. Identify the element with the following electron configuration: 1s22s22p63s23p3

A. aluminum B. carbon C. phosphorus D. sulfur

2. Determine the number of valence electrons of an element that has the electron configuration of 1s22s22p63s23p5.

A. 3 B. 5 C. 7 D. 17

UNIT 4 1. Identify the group number, period number and family name, respectively, for strontium with atomic number 38.

A. Group 2, Period 5, alkali metal B. Group 5, Period 2, alkali metal C. Group 2, Period 5, alkaline earth metal D. Group 5, Period 2, alkaline earth metal

2. Organize the elements: oxygen, polonium, selenium, sulfur, and tellurium in order of increasing atomic radius.

A. polonium, tellurium, selenium, sulfur, oxygen B. oxygen, sulfur, selenium, tellurium, polonium C. sulfur, polonium, oxygen, selenium, tellurium D. tellurium, sulfur, selenium, oxygen, polonium 1. Predict which compound will have the higher melting point.

A. glucose (C5H12O6) B. octane (C8H18) C. hydrogen peroxide (H2O2) D. magnesium oxide (MgO)

2. Titanium is metallic element (Z=22). Determine which type of ion this element will most likely form.

A. anions B. cations C. both anions and cations D. no ions at all UNIT 5 1. If M represents a Group 1 metal, what is the formula for the compound formed by M and oxygen?

A. MO2 B. M2O C. M2O3 D. M3O2

2. Atoms of metals tend to

A. lose electrons and form negative ions B. lose electrons and form positive ions C. gain electrons and form negative ions D. gain electrons and form positive ions

UNIT 6

1. Choose the correct molecular geometry for carbon dioxide (CO2).

A. linear B. trigonal planar C. bent D. trigonal pyramidal

2. Which intermolecular force is responsible for the comparatively high boiling point of water?

A. dipole-dipole B. hydrogen bonding C. London dispersion D. ion-dipole

UNIT 7

1. Calculate the number of molecules in 36.0 g of H2O.

A. 3.01 x 1023 molecules B. 6.02 x 1023 molecules C. 1.20 x 1024 molecules D. 3.90 x 1026 molecules

2. Determine the empirical formula of a compound which has the following chemical analysis by mass: 48.64% carbon, 8.16% hydrogen, and 43.20% oxygen.

A. C3H6O2 B. C2H3O C. CH2O D. CHO