Surface chemistry Flashcards
examples of O/W
milk and vanishing cream
emulsifying agent for O/W
proteins, gums, natural and synthetic soap
examples of W/O
butter, cream
emulsifying agent for W/O
heavy metal salts of fatty acids, lampblack, long chain alcohols
solid in solid
Solid sol
gas in solid
Solid sol
solid in gas
aerosol
liquid in gas
aerosol
solid in liquid
sol
Liquid in solid
gel
gas in liquid
foam
liquid in liquid
emulsion
coloured glasses and gemstones are examples of
solid in solid (solid sol)
Pumice stone, foam, rubber are examples of
Gas in solid(solid sol)
smoke, dust are examples of
solid in gas(aerosol)
fog, mist, cloud, insecticide are examples of
Liquid in gas(aerosol)
paints and cell fluids are examples of
Solid in liquid (sol)
Cheese, jellies are examples of
Liquid in solid (gel)
Froth, whipped cream, soap lather are examples of
gas in liquid (foam)
Milk, hair cream, butter are examples of
Liquid in liquid (emulsion)
CO with 3H2 and Ni are examples of
Methane (CH4)
CO with 2H2 and Cu or ZnO+Cr2O3 catalyst gives
Methanol(CH3OH)
CO with H2 and Cu catalyst gives
Formaldehyde (HCHO)
Which enzyme converts sucrose to glucose and fructose
Invertase
Which enzyme converts glucose to ethyl alcohol and CO2
Zymase
Which enzyme converts starch to maltose
Diastase
Which enzyme converts maltose to glucose
Maltase
Which enzyme converts urea to ammonia and CO2
Urease
Which enzyme converts proteins to amino acids?
Pepsin
Which enzyme converts milk to curd
Lacto bacilli
Source for Invertase, Zymase, Maltase
Yeast
Source of Diastase
Malt
source of Urease
Soyabean
Hydrated metallic oxides are
positively charged sol
Basic dyes like methylene blue are
positively charged sol
Haemoglobin is
positively charged sol
Oxides are
positively charged sol
Metallic sulphides are
Negatively charged sol
Metals are
Negatively charged sol
Acid dyes like eosin, Congo red are
Negatively charged sol
Starch, gum, clay, charcoal, gelatin
Negatively charged sol
