vocabulary
mixture
2 or more things mixed physically not chemically
solvent
separating 2 solids of different sizes is best achieved by __.
sifting
sublimation occurs more easily at ___ pressure.
lower
what's one reason people make alloys rather than using pure metals?
to achieve stronger, lighter, or more pliable materials
solution
2 or more things mixed chemically
insoluble
something which will not dissolve in a specific solvent
separating a solid from a liquid is best achieved by __.
filtration
when a solution of two liquids is distilled the one with the ___ boiling point will be left behind in the original flask.
higher
give 2 examples of metal alloys we see everyday
jewelry, cars
soluble
can be dissolved in a solvent
alloy
mixture of metal with non-metal, or another metal
separating a dissolved solid from a liquid is best achieved by __.
evaporation
the vapour released by dry ice is an example of the process of ___.
sublimation
true or false: sifting is a good method for separating metallic items from other solids.
false
solute
something which dissolves in a solvent
contaminant
a harmful substance
separating two liquids is best achieved by ___.
distillation
true or false: ice sublimates naturally in some places on Earth.
true
what creates the magnetic field in an electromagnet?
the electric current
dissolve
chemically bond with the molecules of a solvent
electromagnet
magnet composed of iron, copper (or another conducting metal wire) and a source of electric energy
separating two solids can sometimes be achieved by ___.
sublimation
true or false: it is possible to isolate many liquids from the same solution using distillation.
true
what are some common examples of how filtration and distillation are used?
coffee filters , petroleum products