KEY WORDS
HYDROGEN
AND
OXYGEN

CARBON,
NITROGEN,
PHOSPHORUS

IRON

SULPHUR

CALCIUM

POTASSIUM

CHLORIDE

HYDROGEN
BOND

T...
The Periodic Table for Biologists.
 The

elements considered essential for life.
The most frequently occurring chemical elements
in living things are carbon, hydrogen,
oxygen and nitrogen.
 Carbon

and ...
NITROGEN
 Nitrogen

is essential in amino
acids and proteins = growth
and repair
SULPHUR


found in some amino acids.
PHOSPHORUS
 Phosphorous

in
phospholipids in
cell membranes.
 Phosphates as
active part of
ATP molecules
(for energy)
 ...
Iron
Animals: In haemoglobin it binds to
oxygen.
Plants: Important in photosynthesis as a
component of chlorophyll and fer...
11

Sodium and Potassium

Na
sodium

 Nerve

impulses.

 Osmotic

gradients. Sodium ions form the main
cation in blood p...
HYDROGEN





Valency =1
Forms 1 bond
Electronegativity of Oxygen causes polarity
Water is a DIPOLAR molecule
Draw and label water molecules to show their
polarity and hydrogen bond formation.

_

Negative Pole

O

Covalent
Bond

+
...
Draw and label water molecules to show their
polarity and hydrogen bond formation.
 Hydrogen

bonds form between water
mo...
Explain the properties of water
PROPERTY

CAUSE

IMPORTANCE

ADHESION

HYDROGEN BONDS

TRANSPIRATION

COHESION

HYDROGEN B...
Explain these images and relate them to the
properties of water.
Try these questions:
1. What are hydrogen bonds? (3)

2. Why does salt dissolve in water but oil does not? (2)

3. multipl...
Make your notes:
 V/S

= Mindmap
 M/L= Table
 V/S= Images and colour
 M/L. Mus= Note how many and find a
pattern
 Nat...
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Chemical elements and water

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Importance of water to living things

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Chemical elements and water

  1. 1. KEY WORDS HYDROGEN AND OXYGEN CARBON, NITROGEN, PHOSPHORUS IRON SULPHUR CALCIUM POTASSIUM CHLORIDE HYDROGEN BOND THERMAL   COHESIVE SOLVENT MEDIUM (FOR METABOLIC REACTIONS/ TRANSPORT)   POLARITY COOLANT SODIUM Biochemistry: The chemistry of life. ELEMENTS AND WATER
  2. 2. The Periodic Table for Biologists.  The elements considered essential for life.
  3. 3. The most frequently occurring chemical elements in living things are carbon, hydrogen, oxygen and nitrogen.  Carbon and hydrogen form the basis of organic molecules.
  4. 4. NITROGEN  Nitrogen is essential in amino acids and proteins = growth and repair
  5. 5. SULPHUR  found in some amino acids.
  6. 6. PHOSPHORUS  Phosphorous in phospholipids in cell membranes.  Phosphates as active part of ATP molecules (for energy)  Part of the DNA “backbone”
  7. 7. Iron Animals: In haemoglobin it binds to oxygen. Plants: Important in photosynthesis as a component of chlorophyll and ferredoxin.
  8. 8. 11 Sodium and Potassium Na sodium  Nerve impulses.  Osmotic gradients. Sodium ions form the main cation in blood plasma.
  9. 9. HYDROGEN     Valency =1 Forms 1 bond Electronegativity of Oxygen causes polarity Water is a DIPOLAR molecule
  10. 10. Draw and label water molecules to show their polarity and hydrogen bond formation. _ Negative Pole O Covalent Bond + H Covalent Bond H + Positive Pole
  11. 11. Draw and label water molecules to show their polarity and hydrogen bond formation.  Hydrogen bonds form between water molecules. OH+ H+ H+ H+ H+ OH+ H+ O- H+ OH+ O- H+ H+ O- O- H+ H+ H+
  12. 12. Explain the properties of water PROPERTY CAUSE IMPORTANCE ADHESION HYDROGEN BONDS TRANSPIRATION COHESION HYDROGEN BONDS TRANSPIRATION SURFACE TENSION HYDROGEN BONDS HABITAT HIGH SPECIFIC HEAT CAPACTIY HYDROGEN BONDS STABILITY FOR HOMEOSTASIS HIGH LATENT HEAT OF VAPORISATION HYDROGEN BONDS EVAPORATIVE COOLING SOLVENT POLARITY TRANSPORT OF SUBSTANCES DENSITY OF ICE HYDROGEN BONDS ICE FLOATS PROTECTS HABITAT
  13. 13. Explain these images and relate them to the properties of water.
  14. 14. Try these questions: 1. What are hydrogen bonds? (3) 2. Why does salt dissolve in water but oil does not? (2) 3. multiple choice:
  15. 15. Make your notes:  V/S = Mindmap  M/L= Table  V/S= Images and colour  M/L. Mus= Note how many and find a pattern  Nat= give exaples from nature  Inter.Ling= teach it!  Mus= sing it

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