AP Chemistry Unit 2

What type of alloy is this?

• Interstitial

• Substitutional

Resonance structures differ by __________.

• number and placement of electrons

• number of electrons only

• placement of atoms only

• number of atoms only

• placement of electrons only

As the number of covalent bonds between two atoms increases, the distance between the atoms ______ and the strength of the bond between them ______.

• increases, increases

• decreases, decreases

• increases, decreases

• decreases, increases

• is unpredictable

The ability of an atom in a molecule to attract electrons is best quantified by the ______.

• electronegativity

• paramagnetism

• diamagnetism

• electron change-to-mass ratio

• first ionization energy

Tags

NGSS.HS-PS1-1

Match the following properties with their classification as either an intensive or extensive property.

• Amount of matter in an object

• Metallic

• Color of an object

• Melting point

• Temperature at which an object changes from solid to liquid

• Silver

• Appearance of an object

• Mass

Which of these bonds takes the most energy to break?

• single

• double

• triple

• quadruple

Tags

NGSS.HS-PS1-4

Potassium iodide, KI,has the following bonding:

• ionic

• metallic

• nonpolar covalent

• polar covalent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-3

Which of the following correctly indicates whether the solid represented by the particulate model shown above conducts electricity and explains why or why not?

• It conducts electricity because it is made of positive and negative ions.

• It conducts electricity because it is made of particles of different sizes.

• It does not conduct electricity because its ions cannot move freely within the solid.

• It does not conduct electricity because there are small spaces between the particles.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-6

Determine the electron geometry (eg) and molecular geometry (mg) of XeF4 (Lewis structure is shown) .

• eg = tetrahedral, mg = tetrahedral

• eg = linear, mg = linear

• eg = octahedral, mg = square planar

• eg = trigonal bipyramidal, mg = tetrahedral

The interaction energy of two hydrogen atoms is shown on the graph above. Which of the answer choices displayed on the graph best represents the bond length of the H2 molecule?

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4