Week 8: Covalent Bonding

What is a molecule?

• A group of atoms bonded together

• A single atom

• A type of chemical reaction

• A phase of matter

Tags

NGSS.MS-PS1-1

Which of the following best describes a covalent bond?

• A bond formed by the attraction of oppositely charged ions

• A bond that occurs only in metals

• Sharing of electron pairs between atoms

• Transfer of electrons between atoms

What does the octet rule state?

• Atoms are most stable with eight neutrons

• Atoms tend to gain, lose, or share electrons to have eight valence electrons

• Atoms tend to have eight protons in their nucleus

• Atoms form bonds to achieve eight electrons in their inner shell

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is a lone pair?

• A pair of electrons shared between two atoms

• A pair of electrons that are not involved in bonding

• A pair of neutrons in the nucleus

• A pair of protons in the nucleus

What is the bond order?

• The number of shared electron pairs between two atoms

• The energy required to break a bond

• The number of atoms in a molecule

• The distance between two bonded atoms

Tags

NGSS.HS-PS1-4

Which theory predicts the shapes of molecules based on electron pair repulsion?

• Quantum theory

• Atomic theory

• VSEPR theory

• Kinetic molecular theory

What is sp3 hybridization?

• Mixing of three s orbitals and one p orbital

• Mixing of two s orbitals and two p orbitals

• Mixing of one s orbital and three p orbitals

• Mixing of one s orbital and one p orbital

What is a resonance structure?

• A single, fixed arrangement of electrons in a molecule

• Different possible arrangements of electrons that cannot be represented by a single Lewis diagram

• A structure with no electron delocalization

• A structure with only single bonds

What is bond energy?

• The energy required to form a bond

• The energy released when a bond is formed

• The energy required to break one mole of a bond in a molecule in the gas phase

• The energy stored in the nucleus of an atom

Tags

NGSS.HS-PS1-4