Question

• conduct when ___________
• covalent bonds:
• ______________ structures
• ______________ melting points
• usually dont ____________

quick check: bond type
fill in the blanks:

• metal + nonmetal = ____________
• nonmetal + nonmetal = ____________
• use the ____________ to check element types.

Explanation:

For the "Quick Check: Bond Type" section:

• Metal + Nonmetal typically forms an Ionic Bond (since metals lose electrons and nonmetals gain them, forming ions that attract).
• Nonmetal + Nonmetal forms a Covalent Bond (they share electrons to achieve stability).
• The Periodic Table is used to check element types (to identify if an element is a metal, nonmetal, etc.).

For the Covalent Bonds section (assuming the blanks are about properties):

• Covalent compounds often have Molecular structures (many are made of molecules).
• They have Low melting points (compared to ionic compounds, as intermolecular forces are weaker than ionic bonds).
• Usually don't Conduct electricity (since they don't have free ions or electrons to carry charge in solid or liquid state, except in some cases like acidic solutions, but generally).

For the first bullet (about conducting when...), if it's about ionic compounds, they conduct when dissolved in water or molten (since ions are free to move then).

Answer:

• Metal + Nonmetal = Ionic Bond
• Nonmetal + Nonmetal = Covalent Bond
• Use the Periodic Table to check element types

(For Covalent Bonds section, typical answers:

• \_\_\_\_\_\_\_\_\_\_\_\_ structures: Molecular
• \_\_\_\_\_\_\_\_\_\_\_\_ melting points: Low
• Usually don't \_\_\_\_\_\_\_\_\_\_\_\_: Conduct electricity

For the first bullet: Conduct when water (dissolved) or molten (for ionic compounds))