15. Antimony is an example of a:
A. Metal
B. Non-metal
C. Metalloid
D. Halogen
16. How much Iodine-123 remains after 65 hours if the starting mass was 10 g?
A. 300 mg
B. 400 mg
C. 500 mg
D. 200 mg
17. Which of the following is not a halogen?
A. Chlorine
C. Iodine
B. Fluorine
D. Sulfur
18. Which of the following is not a noble gas?
A. Neon
B. Xenon
C. Argon
D. Lead
19. What is the identity of X?
A. Fluorine-19
C. Fluorine-18
B. Nitrogen-18
D. Nitrogen-19
20. The splitting of large atoms into smaller atoms, neutrons, and energy is known as:
A. Fission
B. Fusion
C. Nuclear
D. Impossible
21. The combining of small atoms into larger atoms, neutrons, and energy is known as:
A. Fission
B. Fusion
C. Nuclear
D. Impossible
22. Which of the following is not an intermolecular force
A. Hydrogen Bonding
C. Dipole-Dipole
B. Dispersion
D. Covalent Bonding