WCAS Chemistry

What type of bond is formed between ions in an ionic compound?

• Covalent bond
• Metallic bond
• Ionic bond
• Hydrogen bond

Which of the following statements best describes the electrical conductivity of most ionic compounds?

• They are good conductors of electricity in both solid and molten states.
• They are good conductors of electricity only in the solid state.
• They are good conductors of electricity only in the molten state.
• They are poor conductors of electricity in both solid and molten states.

Which of the following substances is an example of an ionic compound?

• Water (H2O)
• Sodium chloride (NaCl)
• Carbon dioxide (CO2)
• Methane (CH4)

What type of bond is formed between atoms in a molecule of a molecular compound?

• Ionic bond
• Metallic bond
• Covalent bond
• Hydrogen bond

Which of the following statements best describes the physical state of most molecular compounds at room temperature?

• They are usually gases or liquids.
• They are usually solids.
• They can be gases, liquids, or solids.
• They are usually gases.

Tags

NGSS.MS-PS1-4

Which of the following substances is an example of a molecular compound?

• Sodium chloride (NaCl)
• Water (H2O)
• Magnesium oxide (MgO)
• Calcium carbonate (CaCO3)

Tags

NGSS.MS-PS1-1

Which of the following statements best describes the electrical conductivity of most molecular compounds?

• They are good conductors of electricity in both solid and liquid states.
• They are good conductors of electricity only in the solid state.
• They are poor conductors of electricity in both solid and liquid states.
• They are good conductors of electricity in both solid and gaseous states.

Which of the following properties is typically associated with ionic compounds?

• Low melting and boiling points
• High solubility in nonpolar solvents
• Brittleness
• Poor electrical conductivity

Which of the following is a characteristic property of covalent compounds?

• High melting and boiling points

• Good conductivity in molten state

• Low solubility in water

• Low melting and boiling points