States of Matter and Intermolecular Forces

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Which type of force refers to the attractions between molecules, controlling physical properties such as boiling and melting points, vapor pressures, and viscosities?

Van der Waals forces

What type of interactions are responsible for the attraction between molecules that have permanent dipoles, with the positive end of one molecule attracted to the negative end of the other and vice versa?

Dipole-dipole interactions

Which type of force is an important force in solutions of ions, allowing ionic substances to dissolve in polar solvents?

Ion-dipole interactions

What type of force is responsible for attracting molecules that have permanent dipoles to each other?

Dipole-dipole interactions

Which type of force increases with the polarity of the molecule, resulting in a higher boiling point?

Dipole-dipole interactions

What is the mathematical expression for Gay-Lussac’s Law, assuming volume remains constant?

V = kT

What type of device is used to measure the difference in pressure between atmospheric pressure and that of a gas in a vessel?

Manometer

What causes your ears to ‘pop’ in an airplane?

Change in atmospheric pressure

What is the weight of air per unit of area known as?

Atmospheric pressure

The pressure of a gas is measured as 2.5 atm. Represent this pressure in both torr and pascals.

1.9 × 103 torr, 2.5 × 104 Pa

Explore the concepts of states of matter, intermolecular forces, and their influence on physical properties such as boiling and melting points. Test your knowledge on the factors that determine the state of a substance at specific conditions.

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