WATER

Question 1

CHONPS

Answer 1

Carbon, Hydrogen, Oxygen, Nitrogen, Phosphorus, Sulfur

Question 2

Water Structure (Universal Solvent)

Answer 2

• Base of cytoplasm: 65%
• All living things are made up of 65% of water
• Structure and characteristics of water are crucial for chemical reactions in cells

Question 3

The chemical formula of water

Answer 3

H2O
- Do not share electrons equally
- O2 has a higher attraction for electrons
- O2: partial negative charge
- H atoms: partial positive charge
WATER IS POLAR !

Question 4

Polar and Non-polar

Answer 4

Tendency of electrons moving/attracted to one atom than the other,
opposite is non-polar.
Polar + Polar = dissolves
Polar + Non-Polar = no dissolves

Question 5

Hydrogen Bond

Answer 5

Water is polar so water molecules are attracted to other water molecules

Question 6

Cohesion and Adhesion

Answer 6

Cohesion: same molecule
- H2O + H2O
Adhesion: attraction
- H2O + Hydrophilic

Question 7

Universal Solvent

Answer 7

Partial negative and partial positive charges make water able to disassociate many ionic bonds

Question 8

ACID

Answer 8

More H+ ions (lower PH)
0-7

Question 9

BASE

Answer 9

Less H+ ions (more PH)
7-14

Question 10

Neutral

Answer 10

7

Question 11

Hydrophilic

Answer 11

Water-loving
Substances containing O2 and N2

Question 12

Hydrophobic

Answer 12

Water-fearing
Non-polar compounds

Question 13

Amphipatmic

Answer 13

Both hydrophilic and hydrophobic