Flashcard 2

Front

What is Avogadro's number?

Back

Avogadro's number is 6.022 x 10^23, which is the number of atoms, molecules, or particles in one mole of a substance.

Front

What is molar mass?

Back

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). It is calculated by adding the atomic masses of all atoms in a molecule.

Front

What is dimensional analysis?

Back

Dimensional analysis is a mathematical technique used to convert units from one system to another, ensuring that the final answer is in the desired units.

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (atoms, molecules, or ions) that influence the physical properties of substances.

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding, typically formed between metals and nonmetals.

Front

What is a molecular dipole?

Back

A molecular dipole is a separation of electric charge within a molecule, resulting in a positive end and a negative end, which occurs due to differences in electronegativity between atoms.

Front

What is a crystal lattice?

Back

A crystal lattice is a three-dimensional arrangement of atoms or ions in a crystalline solid, where the particles are arranged in a repeating pattern.

Front

What is the significance of particle motion in liquids?

Back

The random motion of particles in liquids affects their properties, such as viscosity and vapor pressure, and is crucial for understanding phase changes.

Front

What is the relationship between temperature and vapor pressure?

Back

As temperature increases, the vapor pressure of a liquid also increases because more particles have enough energy to escape into the vapor phase.

Front

What is the difference between isomers?

Back

Isomers are compounds with the same molecular formula but different structural arrangements or spatial orientations, leading to different physical and chemical properties.