unit 2 ap chemistry

Covalent bonds are formed between two _____ that are ________.

• metals, sharing electrons

• nonmetals, transferring electrons

• nonmetals, sharing electrons

• metals, transferring electrons

What type of bond is formed when a metal transfers electrons to a nonmetal, and the opposite charges attract?

• Covalent

• Ionic

• Metallic

• Hydrogen

Tags

NGSS.HS-PS1-2

Lattice energy is the energy to break an _____ bond in a compound. Lattice energy _______ when as the ion's charge increases. Lattice energy ______ as the radii of the ions increase.

• ionic,

  increases,

  decreases

• covalent,

  decreases,

  increases

• ionic,

  increases,

  increases

• covalent,

  increases,

  decreases

Tags

NGSS.HS-PS1-4

NGSS.HS-PS2-4

Metallic bonds are between _______ and they ______ conduct electricity.

• metals,

  never

• metals,

  sometimes

• metals,

  always

• a metal and a nonmetal,

  always

Tags

NGSS.HS-PS1-3

Asymmetrical molecules are ____ and the dipoles ______; Symmetrical molecules are _____ and the dipoles ______.

• polar,

  cancel,

  nonpolar,

  do not cancel

• nonpolar,

  do not cancel,

  polar,

  cancel

• polar,

  do not cancel,

  nonpolar,

  cancel

• nonpolar,

  cancel,

  polar,

  cancel

Formal charge involves comparing the number of _______ an atom has to the number of electrons around it in a Lewis structure.

• valence electrons

• total electrons

• sigma bonds

• pi bonds

The greater the electronegativity difference between two atoms, the more _____ the bond becomes.

• nonpolar

• ionic

• polar

• covalent

How many sigma and pi bonds are in a double bond?

• 1 sigma and 2 pi

• 2 sigma and 2 pi

• 1 sigma and 1 pi

• 2 sigma

What is the bond angle of a molecule with 2 domains of bonding (linear)?

• 120 degrees

• 109.5 degrees

• 180 degrees

_______ alloys are made when a smaller atom fits into the gaps between the larger atoms of a metallic crystal. _______ alloys are made when the radii of the metals are similar in size and are substituted into the crystal lattice.

• substitutional,

  substitutional

• interstitial,

  substitutional

• interstitial,

  interstitial

• substitutional,

  interstitial