A1.1.5 solvent properties.pdf

A 1.1.5 Water solvent eg Sugar solutes Water IMP solvent properties polar nature forms shells around both charged polar moletules prevents clumping remain in solutio...

A 1.1.5 Water solvent eg Sugar solutes Water IMP solvent properties polar nature forms shells around both charged polar moletules prevents clumping remain in solution Waters partially tue pole attracy ve ions partially ve pole tve ions both substances dissolve with polar forms hydrogen bonds molecules  substances that are Hydrophilic chemically attracted to water includes polar molecules we or Ive WATER ADHERES TO BUT DISSOLVES eg Charges NI cellulose not attracted to water Hydrophobic instead to other hydrophobic substances has to be non polar do not have ve or the charges insoluble in water could be soluble in other solvents eg propanone acetone ALL LIPIDS ARE HYDROPHOBIC fats oils WATER'S SOLVENT PROPERTIES allow it to be used as a medium for metabolism transport METABOLISM Dissolved enzymes catalyse specific chemical reactions in the cytoplasm Many different of these reactions are collectively known as metabolism Without water components of these reactions can't move to come to the active site of enzymes water is the medium for METABOLISM  TRANSPORT substances both plants animals PLANT TRANSPORT SYSTEMS Mineral ions products of photosynthesis transported through transported through xylem sap phloem sap eg sucrose BLOOD TRANSPORTS SUBSTANCES NaCl soluble in H2o forms Nat CI ions carried in blood plasma All amino acids are soluble enough to be carried dissolved in blood plasma solubility varies due to R group Glucose polar soluble carried in plasma Oxygeon non polar small size permits to dissolve SPARINGLY in water TEMP SOLUBILITY OF O2 Haemoglobin has binding sites for oxygen increases the capacity of blood to transport oxygen Fat Molecules enlively non polar larger than oxygen insoluble in water amphipathic nature prevents contact between water fat allowing fat droplets to remain suspended in blood plasma while beingtransported around the body