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CHEMISTRY ( acids, bases and salts)
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Lowri Roche
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Cards (105)
According to the provided table, which substance is the strongest acid?
Battery fluid
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According to the provided table, which substance is an alkali?
Drain cleaner
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What is the correct chemical formula for sodium hydroxide?
NaOH
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What chemical compound does drain cleaner contain?
Sodium hydroxide
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In the reaction between a metal and an acid, what products are formed?
Salt
and
hydrogen
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In naming salts formed from metal and acid reactions, which comes first?
The name of the
metal
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When hydrochloric acid reacts with a metal, what is the second part of the salt's name?
Chloride
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When nitric acid reacts with a metal, what is the second part of the salt's name?
Nitrate
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When sulphuric acid reacts with a metal, what is the second part of the salt's name?
Sulphate
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What products are formed when copper reacts with sulphuric acid?
Copper sulphate
and
hydrogen
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What products are formed when sodium reacts with nitric acid?
Sodium nitrate
and
hydrogen
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What products are formed when potassium reacts with sulphuric acid?
Potassium sulphate
and
hydrogen
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What products are formed when calcium reacts with hydrochloric acid?
Calcium chloride
and hydrogen
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What products are formed when aluminium reacts with nitric acid?
Aluminium nitrate
and
hydrogen
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In the experiment, what was the maximum temperature rise for metal A?
57 °C
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What term describes a reaction that gives out heat?
Exothermic
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When metals react with acids, what do they form?
Salt
and
hydrogen gas
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What is the test for identifying hydrogen gas?
Lit
splint in gas
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What observation is expected for a positive hydrogen gas test?
Squeaky
pop
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What are bases usually composed of?
Oxides
or
hydroxides
of
metals
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What are bases called if they are soluble in water?
Alkalis
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What ending do most bases have in their names?
Oxide
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What ending do alkalis have in their names?
Hydroxide
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What is produced when an acid reacts with an alkali?
Salt
and
water
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What type of reaction occurs when an acid reacts with a base?
Neutralisation
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What ions from the acid react with ions from the alkali to form water?
H+
and
OH-
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What is formed from the reaction of H+ ions and OH- ions?
Water (H₂O)
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In the experiment to prepare crystals of soluble salts, why is excess base added?
To ensure all acid has
reacted
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In the experiment to prepare crystals of soluble salts, what does it mean if the salt is soluble?
It
dissolves
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How can copper sulphate be separated from the other product in the experiment?
Evaporate
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What observation is expected in Stage 2 when copper(II) carbonate powder reacts with sulfuric acid?
Bubbles
being made
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What products are formed in the reaction between an acid and a metal carbonate?
Salt, water, and
carbon dioxide
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What happens to limewater when carbon dioxide is bubbled through it?
Turns
cloudy
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What steps are involved in the titration method used to prepare crystals of soluble salts from the reaction of acids with alkalis?
Indicator and fixed volume of acid/alkali in flask
Exact volume of alkali/acid needed for
neutralisation
is measured and recorded
Same fixed volume of acid/alkali in clean flask and exact volume of alkali/acid needed for neutralisation is added but with no indicator
Evaporation of water to form crystals
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In the titration of a strong acid against a strong base, what is produced when sodium hydroxide is neutralised with hydrochloric acid?
Sodium chloride
in solution
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During titration, what indicates that neutralisation has occurred?
Indicator
changes colour
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What piece of equipment is used to accurately measure variable volumes of liquids during a titration?
Burette
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During titration, why should you run acid out into a waste beaker before recording the starting volume?
To fill the
burette
below the tap
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During titration, how should the flask be manipulated after each addition of acid?
Swirled
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What conclusion can be made if 25cm³ of NaOH requires 30cm³ of HCl to neutralise it?
HCl has a higher
concentration
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