SC-100 Class 14 Review Questions

1
SC-100Class 14 Review Questions

• 1. Which of the following represents the most
  stable
• arrangement of electrons?
• a. atoms with completely filled outer electron
  shells
• b. elements that are positioned on the far right
  column of the periodic table of elements
• c. inert gases such as helium, neon and argon
• d. atoms with a total of 2, 10, 18 or 36
  electrons
• e. all of the above

2
SC-100Class 14 Review Questions

• 2. Freezing and boiling are examples of
• a. changes of state.
• b. sublimation.
• c. polymerization.
• d. solution reactions.
• e. reduction.

3
SC-100Class 14 Review Questions

• 3. Chemical bonds are
• a. the attraction among atoms resulting from the
  redistribution of electrons.
• b. a more stable configuration among two or more
  atoms than possessed by the original atoms.
• c. the filling of the outer electron shells.
• d. ionic, covalent, hydrogen, or metallic.
• e. all of the above

4
SC-100Class 14 Review Questions

• 4. The electrons at the outer level of the atom
  are called
• a. outer field electrons.
• b. the atomic number.
• c. valence electrons.
• d. van de Waals electrons.
• e. ionic electrons.

5
SC-100Class 14 Review Questions

• 5. Which state of matter maintains a constant
  volume but not a fixed shape?
• a. gas
• b. plasma
• c. liquid
• d. crystal
• e. solid

6
SC-100Class 14 Review Questions

• 6. If you drop a material that is held together
  by ionic bonds, one likely outcome is that it
  will
• a. bend.
• b. bounce.
• c. flow across the floor.
• d. shatter.
• e. be dented.

7
SC-100Class 14 Review Questions

• 7. Every atom in nature attempts to reach a state
  of lowest energy.TRUE
• 8. A chemical bond leads to a more stable
  arrangement of two or more atoms.TRUE