Chapter 3 Flashcards
1
Q
What does it mean to be hydrophobic/phillic?
A
Whether or not the molecule is attracted to water.
2
Q
What electronegativity difference determines an ionic bond?
A
1.8 or higher.
3
Q
What is cohesion?
A
The tendency of molecules to be attracted to another molecule of the same type.
4
Q
What is adhesion?
A
Attraction between molecules of different types.
5
Q
What is the pH scale?
A
A measurement of how acidic something is. 1 is very acidic, 14 is very basic.
6
Q
Which atom in a water molecule is negatively charged?
A
Oxygen
7
Q
What is a calorie?
A
a unit of energy or work defined as the energy required to raise one gram of water by one degree C at 15°C
