Water and Solution Chemistry Flashcardizz

Front

What is cohesion?

Back

Cohesion is the attraction between molecules of the same substance, which causes them to stick together. An example is water droplets forming on a surface.

Front

What is adhesion?

Back

Adhesion is the attraction between molecules of different substances. An example is water molecules sticking to a glass surface.

Front

What does it mean for a molecule to be polar covalent?

Back

A polar covalent molecule has an uneven distribution of electron density, resulting in a slight positive charge on one end and a slight negative charge on the other. Water (H2O) is a classic example.

Front

What is the pH scale?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What is an acid?

Back

An acid is a substance that has a pH less than 7 and can donate hydrogen ions (H+) in a solution.

Front

What is a base?

Back

A base is a substance that has a pH greater than 7 and can accept hydrogen ions (H+) or donate hydroxide ions (OH-) in a solution.

Front

What is the significance of hydrogen ion concentration in a solution?

Back

Hydrogen ion concentration determines the acidity of a solution; higher concentrations indicate stronger acids.

Front

What is capillary action?

Back

Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of external forces, often due to adhesion and cohesion.

Front

What is specific heat?

Back

Specific heat is the amount of heat required to raise the temperature of a substance by one degree Celsius. Water has a high specific heat, meaning it can absorb a lot of heat without a significant temperature change.

Front

What is a buffer?

Back

A buffer is a solution that resists changes in pH when small amounts of acid or base are added, helping to maintain a stable pH.