Chemistry Quiz: Ionic and Covalent Compounds

What type of compounds have a high melting point, dissolve in water, and conduct electricity when molten or in a solution?

• Ionic Compounds

• Organic Compounds

• Covalent Compounds

• Metallic Compounds

Which of the following compounds has a low melting point, variable water solubility, and is a poor conductor of electricity?

• NaCl

• CO2

• MgO

• Fe2O3

Tags

NGSS.HS-PS1-3

What is the general property of covalent compounds in terms of melting point, water solubility, and conductivity of electricity?

• High melting point, variable water solubility, poor conductor of electricity

• Low melting point, dissolves in water, conducts electricity

• Low melting point, variable water solubility, poor conductor of electricity

• High melting point, dissolves in water, conducts electricity

Tags

NGSS.HS-PS1-1

What is the general property of ionic compounds in terms of melting point, water solubility, and conductivity of electricity?

• High melting point, variable water solubility, poor conductor of electricity

• Low melting point, variable water solubility, poor conductor of electricity

• High melting point, dissolves in water, conducts electricity

• Low melting point, dissolves in water, conducts electricity

Tags

NGSS.HS-PS1-3

Why does salt (NaCl) have a higher melting point than sugar (C6H12O6)?

• Because salt is a covalent compound

• Because salt is an ionic compound

• Because sugar is a covalent compound

• Because sugar is an ionic compound

Tags

NGSS.HS-PS1-3

What is the boiling/melting point of covalent compounds compared to ionic compounds?

• Higher

• Lower

• The same

• Depends on the specific compound

Do covalent compounds generally conduct electricity?

• Yes, when molten or in a solution

• No, never

• Yes, always

• Depends on the specific compound

What elements are present in the compound NaCl?

• Sodium and Chlorine

• Nitrogen and Oxygen

• Carbon and Oxygen

• Hydrogen and Oxygen

Tags

NGSS.MS-PS1-1

Is the compound CO2 ionic or covalent?

• Ionic

• Covalent

• Metallic

• Organic

What is the general property of ionic compounds in terms of water solubility?

• Depends on the specific compound

• Partially dissolves in water

• Does not dissolve in water

• Dissolves in water