solution
mixtures
heterogeneus mixtures
homogeneous mixtures
pure substantes
mix salt with water
two or more types of particles
one type of particles
can see the different particles
cannot see the different particles.
filtration
sieving
evaporation
distillation
separate a solution of two different liquids.
separate a mixture of solids that have different sizes
separate a solution of a solid with a liquid.
separate a mixture of solids with liquids.
objects lose thermal energy
objects receive thermal energy
heat
Thermal conductors
Thermal insulators
can transfer thermal energy very well.
thermal energy that flows through matter.
they heat up
they cool down.
cannot conduct thermal energy very well.
beaker, cylinder
wood, plastic, glass, rubber, wood, cotton
thermometers
many metals: aluminium, steel cooper, gold
good thermal insulators
measure temperature
good thermal conductors.
measure volume
recycle
non-renewable sources
put on a sweater
close the fridge
take short shower
walk or ride your bike
renewable sources
turn off lights
do not leave fridge open
wind and the Sun
to save hot water
oil, gas and coal.
to school
when you leave the room
when you feel cold
paper, plastic, glass and metal