physical change Flashcards
what is phyisical change
it is one in which a substance chemical composition remains unchanged
what kind of change does it go through
it undergoes through a change in state
name the four key states
(s) solid
(l) liquid
(g) gas
(ag) aqueous solution (dissolve din water )
what e te types of physical change
melting
evaporation
condensation
freezing
sublimation (solid to gas )
deposition (gas to solid )
during physical change what also changes
physical is accompanied by change in the inter molecular forces
the IMF is broken down during physical aching
during physical change does the substance loose its physical properties
no it does not loose its physical properties
separation of mixes
salt and water
water and oil
soil and water
water and alcohol
iron filings and salt
beans and rocks
salt and water = Evaporation (based on `Bp)
water and oil = decanting (based on densities )
soil and water = filtration (soil is soluble in water)
water and alcohol = distillation (liquids with different Bp)
iron filings and salt = magnetism (magnetic properties )
beans and rocks = hand sorting
