Structure and bonding

What is the correct definition for an ionic bond?

• A shared pair of electrons between non-metals

• Electrostatic force of attraction between positively charged metal ions

• Electrostatic force of attraction between oppositely charged ions

• A shared pair of electrons between metals

In which state does an ionic compound NOT conduct electricity?

• Liquid

• Solid

• In solution

Which of the following statements are correct about ionic compounds?

• Has a low melting point

• Conducts electricity only when molten or in solution

• Electrostatic attractions between oppositely charged ions are very strong

• Has a giant 3D lattice structure

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

What is the correct definition for a covalent bond?

• A shared pair of electrons between non-metals

• An electrostatic attraction between metals and non-metals

• An electrostatic attraction between oppositely charged ions

• A shared pair of electrons between a metal and a non-metal

Which of the following statements are correct about simple molecules?

• They have low boiling points

• They are usually gases and liquids at room temperature

• They conduct electricity

• They do not conduct electricity

Tags

NGSS.MS-PS1-1

In diamond, how many carbon atoms is each carbon bonded to?

• 1

• 2

• 3

• 4

Which statement below best describes the structure of diamond?

• Small molecules held together by weak intermolecular forces

• Rigid giant covalent structure

• Layers of carbon atoms held together by weak forces

Tags

NGSS.HS-PS1-3

Which of the following statements are correct about diamond?

• Has a high melting point

• Does not conduct electricity

• Is very soft and slippery

• Is the hardest known natural substance

Which statement below best describes the structure of graphite?

• Small molecules held together by weak intermolecular forces

• Rigid giant covalent structure

• Layers of carbon atoms held together by weak forces

Tags

NGSS.HS-PS1-3

Which of the following statements are correct about graphite?

• Has a high melting point

• Does not conduct electricity

• Is very soft and slippery

• Conducts heat and electricity

• Has delocalised electrons which can move freely along the layers