Comparing Ionic and Covalent Compounds: Key Characteristics

What is the main visual difference between ionic and covalent compounds?

• Ionic compounds are always colored.

• Covalent compounds are always white.

• There is no significant visual difference.

• Ionic compounds are always crystalline.

Which type of compound is generally more soluble in water?

• Both are equally soluble

• Covalent compounds

• Ionic compounds

• Neither are soluble

What is an exception to the general trend of solubility in water?

• Some ionic compounds do not dissolve in water.

• All covalent compounds dissolve in water.

• No covalent compounds dissolve in water.

• All ionic compounds dissolve in water.

What is the general trend for the solubility of covalent compounds in water?

• They are always soluble.

• They are always insoluble.

• They are usually not soluble.

• They are usually soluble.

Which type of compound generally has a higher melting point?

• Neither have a high melting point

• Ionic compounds

• Covalent compounds

• Both have the same melting point

What is the reason for ionic compounds having higher melting points?

• They are made of ions.

• They are made of molecules.

• They have weaker bonds.

• They are always solid.

Tags

NGSS.HS-PS1-3

Which type of compound conducts electricity?

• Covalent compounds

• Neither conduct electricity

• Ionic compounds

• Both conduct electricity

Why do ionic compounds conduct electricity?

• They contain ions.

• They are always liquid.

• They are made of molecules.

• They have free electrons.

Which of the following is a covalent compound that does not conduct electricity?

• Potassium iodide

• Copper nitrate

• PDI chlorobenzene

• Magnesium chloride

What is the main reason covalent compounds do not conduct electricity?

• They are made of ions.

• They are always solid.

• They do not split into ions.

• They have free electrons.