unit: reversible and irreversible changes grade v science ms. khaula rizwan mixtures & solutions
Post on 28-Dec-2015
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MATTER
is
solid liquid gas
melts to
freezes to
evaporates to
condenses to
anything that has mass and takes
up space
can be
can be
can be
MATTER FACT
Water can be found naturally on earth as a solid, liquid, and a gas.
MIXTURES
Two or more kinds of
substances combined together
are
solutions
separated
can be
can be
by
using sievesusing magnets
evaporation
sorting
one kind of material dissolves
in another
made when
cannot be separated by
filtration
which
filtration
How would you separate a mixture of sand and water? ANSWER:Pour the mixture through
a filter. The water will go throughthe filter leaving the sand behind.
ANSWER:Pour the mixture through
a filter. The water will go throughthe filter leaving the sand behind.
How would you separate a mixture of iron and sand? ANSWER:Use a magnet to separate
the iron fillings from the sand.
ANSWER:Use a magnet to separate
the iron fillings from the sand.
How would you separate a mixture of salt and water?
HINT:
Salt and water form a solution.
HINT:
Salt and water form a solution.
How would you separate a mixture of salt and water?
HINT:
Salt and water form a solution.
HINT:
Salt and water form a solution.
ANSWER:Heat the water until the
water evaporates. The saltwill be left behind in the dish or
beaker.
ANSWER:Heat the water until the
water evaporates. The saltwill be left behind in the dish or
beaker.
Alright Young Scientists!!
Now its time to understand some very important key words when we are learning about SOLUTION.
Solution
• A mixture that is formed when two or more substances (solutes) are dissolved in the liquid (solvent).
Solution= Solutes + Solvent
Example:
Sugar in water= Sugar + Water
In a salt water solution…
• Is salt the solute or the solvent?– Solute
• Is water the solute or the solvent?– Solvent
• What does the solute do?– Gets dissolved
• What does the solvent do?– Does the dissolving
INVESTIGATING SOLUTIONS
1. What is a saturated solution?
____________________________________________________
____________________________________________________
___________________
2. How can you tell when a solution is saturated?
_________________________________________
A solution in which no more solid material will
dissolve; additional material settles to the
bottom of the container (beaker/dish)
I can tell when no more material will dissolve
in the solution.
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