Atoms & bonds Flashcards
1
Q
which 4 elements make up 96.3% of the human body?
A
Carbon, Oxygen, Nitrogen and Hydrogen
2
Q
What is the definition of Cohesion?
A
the ability of molecules to bind to each other
3
Q
what is the definition of adhesion?
A
the attraction of different substances
4
Q
what is surface tension?
A
measure of how difficult it is to break the surface of a liquid
5
Q
what is a hydration shell?
A
a sphere of water surrounding an ionic molecule when dispersed in water
6
Q
what is the name of the COH group?
A
Hydroxyl
7
Q
what is the name of the C=O group?
A
Carbonyl
8
Q
what is the name of the COOH group?
A
Carboxyl
9
Q
what is the name of the S-H group?
A
Sulfhydryl
10
Q
what is the name of the NH2 group?
A
Amine
11
Q
what is the name of the PO=OOHOH
A
Phosphate
