WATER Flashcards
1
Q
WHY IS WATER IMPORTANT?
A
- GREAT BIOLOGICAL IMPORTANCE
- MEDIUM IN WHICH ALL BIOLOGICAL REACTIONS TAKE PLACE IN CALLS
- 70% - 95% OF THE MASS OF A CELL IS WATER
- MAJOUR HABITAT FOR ORGANISMS
2
Q
WHAT DOES WATERS STRUCTURE CONSIST OF?
A
- 2 HYDROGEN ATOMS
- ONE OXYGEN ATOM
- BONDED COVALENTLY
- ELECTRON PAIRS = SHARED BETWEEN HYDROGEN AND OXYGEN
3
Q
WHAT IS WATER AS A WHOLE?
A
ELECTRICALLY NEUTRAL
4
Q
WHAT IS UNEVEN IN WATER?
A
THE SHARING OF ELECTRONS BETWEEN THE OXYGEN AND HYDROGEN ATOMS
5
Q
WHAT DOES THE O2 ATOMS ATTRACTING MORE STRONGLY RESOLT IN?
A
- PARTIAL NEGATIVE CHARGE ON THE O2 ATOM
- PARTIAL POSITIVE CHARGE ON THE HYDROGEN ATOMS
6
Q
WHAT DOES THE PARTIAL POSITIVE AND NEGATIVE CHARGES MAKE WATER?
A
A POLAR MOLECULE (DIPOLE)
7
Q
WHAT DOES THE PARTIAL POSITIVE AND NEGATIVE CHARGES MAKE WATER?
A
A POLAR MOLECULE (DIPOLE)
