2.5 Study Guide Flashcards
What is cohesion?
H bonding between H2O molecules.
What is adhesion?
H bonding between H2O + other substances.
What is specific heat?
The amount of energy it takes to heat up 1 gram of a substance 1 degrees C.
What is solvent?
Dissolves the solute to create the solution.
What is heat of vaporization?
The energy it takes for 1 g of water to evaporate to become vapor, hydrogen bonds must be completely broken.
What are the five properties?
- Cohesion and Adhesion.
- Water is the Solvent of Life.
- The Special Case of Ice.
- High Specific Heat.
- Heat of Vaporization.
How does water’s polarity or ability to make hydrogen bonds give it each property?
Polarity makes water a good solvent. Solvents dissolve solutes, gives it the ability to stick to itself (cohesion) stick to other substances (adhesion), and have surface tension (due to hydrogen bonding).
Please explain why each property is important to life.
They help support life processes and habitats. Water’s role as a good solvent helps us get oxygen and nutrients.
What is H bonding between H2O and other substances?
Adhesion.
What dissolves the solute to create the solution?
The solvent.
What is H between 2 H2O molecules?
Cohesion.
What is the amount of energy it takes to heat up 1 gram of a substance 1 degrees C?
The specific heat.
