science
biodiversity
water and solution
variety of species
importance of biodiversity
sources of food
balance in nature
recreational places
research
biodiversity management
- banning the killing or trade of endemic or endangered animals
- protecting the habitat
- in situ preserves the animal within their natural habitat
- ex situ preserves it outside their natural habitats
characteristics
- high surface tension
- boiling point = 100
- freezing point = 0
- colourless
- density = 1 gcm
cohesive force
adhesive force
attractive force between the same particles
attractive force between different particles
electrolysis
Oxygen gas is produced at anode ( ➕ )
hydrogen gas is produced at the cathode ( ➖ )
factors affecting evaporation
humidity
surface area
surface area
movement of air
organic solvents
alcohol
kerosene
acetone
turpentine
ether
nail varnish, lacquer
perfume , antipseptic
lamp oil
paint remover
oil extractor
process of water purification
filtration
removes large suspended particles
oxidation
increases oxygen content to get rid of unpleasent smell
coagulation
slaked lime to reduce adicity , alum is also added so particles stick together and float to the bottom
sedimentation
suspended particles deposit at the bottom of the tank
filtration
removes suspended particles using sand filters
chlorination and fluoridation
chlorine added to kill microorganisms , sodium fluoride is added to prevent tooth decay
acid n alkali
universal indicators
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