Unit 3-Bonding Pre-Test

Name this compound: C₃H₈: __________________________________

Is the following electron dot diagram a correct model of the compound AlCl₃? Please choose the best explanation.

• Yes, the Al³⁺ has taken in 3 electrons to have a full valence shell to form an ionic bond.

• No, the Cl⁻ has taken in 7 electrons to have a full valence shell to form a covalent bond.

• Yes, the Al³⁺ has lost three electrons to each of the chloride ions to form an ionic bond.

• No, the Al³⁺ has not transferred electrons from its valence shell to form an ionic bond.

• IDK

Based on their chemical formulas, which substance below would you expect to conduct electricity when dissolved in water?

• NaCl

• NO

• CH₄

• SCl₂

• IDK

Based on the table of melting points and boiling points of common substances, which group of substances would you expect to be covalent compounds?

• Methane, Rubbing alcohol and Water

• Water and Table salt

• Baking soda, Table salt and Quicklime

• Quicklime only

• IDK

Write the formula for this compound: lithium phosphide: __________________________________

What is the stable ionic compound between Sulfur and Chlorine?

• SCl₂

• S₂Cl₂

• Both a and b

• The compound formed between sulfur and chlorine is not ionic.

• IDK

In the name carbon dioxide, the prefix of the second word indicates that a molecule of carbon dioxide contains

• two carbon atoms.

• two oxygen atoms.

• a polyatomic ion.

• an ionic bond.

• IDK

Name this compound: SF₆: ________________________________

Study the electron dot diagrams for lithium, carbon, fluorine, and neon in Figure 6-1. Choose the statement that correctly identifies the most stable of the elements.

• Lithium is the most stable element because it has to lose only one electron to achieve a stable configuration.

• Carbon is the most stable element because it can form four bonds.

• Fluorine is the most stable element because it has to gain only one electron to achieve a stable configuration.

• Neon is the most stable element because its highest occupied energy level is filled.

• IDK

What is the correct name for NO?

• Mononitrogen Monoxide
• Nitrogen Monoxide
• Mononitrogen Dioxide
• Nitrogen Oxide
• IDK