Honor Bio 5.4 Flashcards
What is cohesion?
Cohesion is the attraction between molecules of the same substance, such as water molecules.
What is adhesion?
Adhesion is the attraction between molecules of different substances, such as water and glass.
What is a solvent?
A solvent is a substance that dissolves other substances (solutes) to form a solution. Water is known as the universal solvent.
What is specific heat?
Specific heat is the amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.
What is heat of vaporization?
Heat of vaporization is the amount of energy required to turn a liquid into a gas at its boiling point.
What is concentration?
Concentration is the amount of solute dissolved in a given quantity of solvent or solution.
What is pH?
pH is a measure of how acidic or basic a solution is, based on the concentration of hydrogen ions.
What is pOH?
pOH is a measure of the concentration of hydroxide ions in a solution.
What is a hydroxide ion?
A hydroxide ion is a negatively charged ion, formed when a water molecule loses a hydrogen ion.
What is a hydronium ion?
A hydronium ion forms when a water molecule gains a hydrogen ion.
What is an acid?
An acid is a substance that increases the concentration of H+ ions in a solution.
What is a base?
A base is a substance that increases the concentration of OH− ions in a solution.
What are the five properties of water?
The five properties of water are cohesion, adhesion, high specific heat, high heat of vaporization, and being a universal solvent.
How does water’s polarity give it the property of cohesion?
Water’s polarity allows it to form hydrogen bonds with other water molecules, creating strong cohesive forces.
Why is cohesion important to living things?
Cohesion allows water to move as a column in plants during transpiration and contributes to surface tension.
