FREE AP Chemistry Exam Trivia Question and Answers

Question 1

When 1 mole of potassium dichromate and 3 moles of nickel are combined, how many moles of electrons are transferred?

Accepted Answer

six moles of electrons

Answer

two moles of electrons

Answer

three moles of electrons

Answer

five moles of electrons

Question 2

Which of the following circumstances results in the bond length between any two nonmetal atoms?

Accepted Answer

Where the energy of interaction between the atoms is at its minimum value

Answer

Where the nuclei of each atom exhibits the strongest attraction to the electrons of the other atom

Answer

The closest point at which a valence electron from one atom can transfer to the other atom

Answer

The point at which the attractive and repulsive forces between the two atoms are equal

Question 3

At 15°C, hydrogen fluoride, or HF, is a liquid. At the same temperature, all other hydrogen halides (represented by HX, where X is any other halogen) are gases. Why?

Accepted Answer

The dipoles in an HF molecule exhibit a particularly strong attraction force to the dipoles in other HF molecules.

Answer

HF is smaller than any other H-X molecule; therefore it exhibits stronger London dispersion forces.

Answer

The H-F bond is the most ionic in character compared to all other hydrogen halides

Answer

Fluorine has a very high electronegativity; therefore the H-F bond is stronger than any other H-X bond.

Question 4

The subatomic particle with the greatest power to penetrate is

Accepted Answer

a beta particle

Answer

a proton

Answer

an alpha particle

Answer

a neutron

Question 5

Which of the following bonds has its negative end written last?

Accepted Answer

P—CI

Answer

O—S

Answer

Br—N

Answer

N—C

Question 6

Which of the following accurately ranks each intermolecular attraction's strength from strongest to weakest?

Accepted Answer

Hydrogen bond < dipole-dipole < induced dipole

Answer

Induced dipole < dipole-dipole < hydrogen bond

Answer

Dipole-dipole < hydrogen bond < induced dipole

Answer

Induced dipole < hydrogen bond < dipole-dipole

Question 7

A mechanism is a series of simple reactions that together make up the reaction's overall stoichiometry. A material is referred to as such if it is created in one elementary reaction and consumed in another.

Accepted Answer

an intermediate

Answer

a complex

Answer

a catalyst

Answer

a reactant