Extra Questions (Unit 2, 3, 5)

Front

What is the reason a solid does not conduct electricity?

Back

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

Front

How do you arrange binary compounds in order of increasing bond polarity?

Back

CH₄ < SiCl₄ < SF₄

Front

What is a likely error affecting absorbance measurements in a cuvette?

Back

A fingerprint was left on the side of the cuvette facing the detector.

Front

What explains the relatively high boiling point of HF?

Back

HF molecules tend to form hydrogen bonds.

Front

What condition results in the fastest reaction rate when combining solid reactants of varying particle size?

Back

Using the smallest particle size (represented by option D).

Front

Define bond polarity.

Back

Bond polarity refers to the distribution of electrical charge over the atoms joined by the bond.

Front

What is the significance of hydrogen bonding in molecules?

Back

Hydrogen bonding significantly affects the physical properties of substances, such as boiling points.

Front

Explain the concept of molar absorptivity.

Back

Molar absorptivity is a measure of how well a chemical species absorbs light at a given wavelength.

Front

What is the role of ions in electrical conductivity?

Back

Ions must be able to move freely to conduct electricity in a substance.

Front

What factors influence the rate of a chemical reaction?

Back

Factors include temperature, concentration, surface area, and the presence of catalysts.