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chemistry
acids and bases
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Created by
Aimee Ferguson
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Cards (45)
When a substance is neutral describe the concentration of H+ and OH- ions
they are
equal
The ion that has a higher concentration in alkalis is
hydroxide
ions (
OH-
)
The ion that has a higher concentration in acids is
hydrogen
ions (
H+
)
When an solution is diluted, what is added?
water
When an acid is diluted, the pH
increases
to get closer to
neutral
/pH 7
When an alkali is diluted, the pH
decreases
to get closer to
neutral
/pH 7
If an insoluble metal oxide is added to a solution, what effect does this have on the pH?
nothing
because it's
insoluble
The test for
carbon
dioxide
turns limewater cloudy.
What is the test for carbon dioxide?
turns
limewater cloudy
What are the products when a metal reacts with an acid?
salt
and
hydrogen
gas
Salt and hydrogen gas is produced when a
metal
reacts with an
acid
The test for
hydrogen
gas
is it burns with a pop.
What is the test for hydrogen gas?
Burns
with a
pop
What practical technique could be used for a neutralisation?
titration
The 2 main pieces of apparatus used to measure in a titration is a
burette
and a
pipette.
What 2 main pieces of apparatus are used to measure in a titration?
burette
and
pipette
What is added to the reaction to see the end point of a reaction?
Indicator
(NOT universal
indicator
)
What forms when ammonia reacts with an acid?
Ammonium salt
What is the test for ammonia gas?
Turns damp
pH
paper
blue
The test for
ammonia
gas
turns damp pH paper blue
The reaction that produces an
insoluble
product from two solutions is a
precipitate
reaction
How can a precipitate easily be separated from a mixture?
Filtration
The reaction between an acid and a base is called
neutralisation.
What do we call the reaction between an acid a base?
neutralisation
What are the three types of bases?
Metal oxide
,
Metal Hydroxide
,
Metal
Carbonate
What are the products of a neutralisation?
Water
+
salt
( +
carbon dioxide
if metal carbonate)
the pH scale ranges from
0-14.
Alkalis have a pH of
>7
Acids have a pH of
<7
pH 7 is
neutral
Ions that remain unchanged in a reaction are called?
spectator ions
How can we know which ions are spectator ions?
They will be (
aq
)
before
and
after
the arrow
Non-metal oxides dissolve to form what type of solution?
Acidic
Non-metal
oxides
dissolve to form
acidic
solutions
Name the three non-metal oxides that make acids
Sulfur Dioxide
(SO2),
Carbon Dioxide
(CO2),
Nitrogen
oxide (NO2)
Metal oxides dissolve in water to form what type of solutions?
Alkaline
Metal oxides
dissolve to form
alkaline
solution
What does concordant mean?
values within
0.2cm3
of each other
What values are used to calculate an average volume of a titration?
Concordant titre
values
Values within
0.2cm3
of each other are
concordant.
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