Zusammenfassung der Ressource
Frage 1
Frage
Temporary hard water contains . . . . ions, these decompose to form carbonate ions.
Antworten
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hydrogen
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Carbon
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Magnesium
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Hydrogencarbonate
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Calcium
Frage 2
Frage
Permanent hard water can be made soft by:
Antworten
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Ion exchange tower
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Adding sodium carbonate
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Mixing it with lather
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Boiling it
Frage 3
Frage
Water filters contain . . ., . . ., and (. . . exchange resins) can improve the taste of the water. (only last unknown applies to the exchange resins.)
Antworten
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Magnesium
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Carbon
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Silver
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Water
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Boron
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Ion
Frage 4
Frage
In the equation Q = mc ΔT. What does the m stand for?
Frage 5
Frage
In the equation Q = mc ΔT. What does the c stand for?
Frage 6
Frage
What provides a different pathway for a chemical reaction that has a lower activation energy?
Antworten
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Carbonates
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Increase in pressure
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Increase in temperature
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Catalysts
Frage 7
Frage
Aluminium, Calcium and Magnesium react with what to from a white precipitate?
Antworten
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Carbon hydroxide solution
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Silver nitrate solution
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Sodium hydroxide solution
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barium hydroxide solution
Frage 8
Frage
What is the ONLY precipitate that dissolves in excess sodium hydroxide solution
Antworten
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Calcium hydroxide
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Aluminium hydroxide
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Copper hydroxide
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Magnesium hydroxide
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Titanium hydroxide
Frage 9
Frage
Carbonates react with what to form CO2.
Antworten
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Weak acids
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Weak alkaline
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Strong acids
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Strong alkaline
Frage 10
Frage
Halide Ions + what + what makes precipitates (of varying colours)
Frage 11
Frage
Methanol, Ethanol and Propanol dissolve in water to form a solution that is . . .
Antworten
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Strongly Acidic
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Neutral
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Strongly alkaline
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Weakly acidic
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weakly alkaline
Frage 12
Frage
Methanol, Ethanol and Propanol also react with . . . . to produce . . . . gas.
Frage 13
Frage
Ethanol is oxidised to
Antworten
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Ethanoic Acid
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Ethyl ethanoate
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Ethene
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Methane
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Alcohol
Frage 14
Frage
Ethanoic acid is the main acid in . . .
Antworten
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Hydrochloric Acid
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Citric Acid
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Vinegar
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Lemon Juice
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Car Batteries
Frage 15
Frage
Carboxylic Acids dissolve in water to produce . . . . solutions
Antworten
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Alkaline
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Neutral
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Acidic
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Non-existent
Frage 16
Frage
Carboxylic Acids react with carbonates to produce . . .
Frage 17
Frage
Carboxylic Acids react with alcohols in the presence of a(n) . . . . catalyst to produce . . . .
Frage 18
Frage
Carboxylic acids do not ionise completely when dissolved in water.
Frage 19
Frage
What is the general formula for making esters?
Antworten
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Methanoic acid + ethanol ⇌ methyl ethanoate + CO2
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alcohol + oxygen ⇌ ester + CO2
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carboxylic acid + alcohol ⇌ ester + water
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Carboxylic acid + water ⇌ ester + alcohol