2629336
Descripción
Test por 10jonty.bird, actualizado hace más de 1 año
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Creado por 10jonty.bird
hace más de 9 años
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Pregunta 1
Pregunta
Temporary hard water contains . . . . ions, these decompose to form carbonate ions.
Respuesta
-
hydrogen
-
Carbon
-
Magnesium
-
Hydrogencarbonate
-
Calcium
Pregunta 2
Pregunta
Permanent hard water can be made soft by:
Respuesta
-
Ion exchange tower
-
Adding sodium carbonate
-
Mixing it with lather
-
Boiling it
Pregunta 3
Pregunta
Water filters contain . . ., . . ., and (. . . exchange resins) can improve the taste of the water. (only last unknown applies to the exchange resins.)
Respuesta
-
Magnesium
-
Carbon
-
Silver
-
Water
-
Boron
-
Ion
Pregunta 4
Pregunta
In the equation Q = mc ΔT. What does the m stand for?
Respuesta
-
Mass of liquid heated
-
Specific head capacity of the liquid
-
Energy transferred
-
Number of moles
Pregunta 5
Pregunta
In the equation Q = mc ΔT. What does the c stand for?
Respuesta
-
Mass of liquid heated
-
Final temperature
-
Specific heat capacity of the liquid
-
Change in time
Pregunta 6
Pregunta
What provides a different pathway for a chemical reaction that has a lower activation energy?
Respuesta
-
Carbonates
-
Increase in pressure
-
Increase in temperature
-
Catalysts
Pregunta 7
Pregunta
Aluminium, Calcium and Magnesium react with what to from a white precipitate?
Respuesta
-
Carbon hydroxide solution
-
Silver nitrate solution
-
Sodium hydroxide solution
-
barium hydroxide solution
Pregunta 8
Pregunta
What is the ONLY precipitate that dissolves in excess sodium hydroxide solution
Respuesta
-
Calcium hydroxide
-
Aluminium hydroxide
-
Copper hydroxide
-
Magnesium hydroxide
-
Titanium hydroxide
Pregunta 9
Pregunta
Carbonates react with what to form CO2.
Respuesta
-
Weak acids
-
Weak alkaline
-
Strong acids
-
Strong alkaline
Pregunta 10
Pregunta
Halide Ions + what + what makes precipitates (of varying colours)
Respuesta
-
Barium Nitrate Solution
-
Sodium hydroxide solution
-
Strong Acid
-
Silver nitrate solution
-
Nickel catalyst
-
Weak Acid
-
Oxygen
Pregunta 11
Pregunta
Methanol, Ethanol and Propanol dissolve in water to form a solution that is . . .
Respuesta
-
Strongly Acidic
-
Neutral
-
Strongly alkaline
-
Weakly acidic
-
weakly alkaline
Pregunta 12
Pregunta
Methanol, Ethanol and Propanol also react with . . . . to produce . . . . gas.
Respuesta
-
CO2
-
Sodium hydroxide solution
-
Ethanoic acid
-
Oxygen
-
Potassium
-
Sodium
-
Hydrogen
-
Iron (II)
Pregunta 13
Pregunta
Ethanol is oxidised to
Respuesta
-
Ethanoic Acid
-
Ethyl ethanoate
-
Ethene
-
Methane
-
Alcohol
Pregunta 14
Pregunta
Ethanoic acid is the main acid in . . .
Respuesta
-
Hydrochloric Acid
-
Citric Acid
-
Vinegar
-
Lemon Juice
-
Car Batteries
Pregunta 15
Pregunta
Carboxylic Acids dissolve in water to produce . . . . solutions
Respuesta
-
Alkaline
-
Neutral
-
Acidic
-
Non-existent
Pregunta 16
Pregunta
Carboxylic Acids react with carbonates to produce . . .
Respuesta
-
Carbonates of the Carboxylic variety
-
Water
-
Hydrogen
-
CO2
-
Acids
Pregunta 17
Pregunta
Carboxylic Acids react with alcohols in the presence of a(n) . . . . catalyst to produce . . . .
Respuesta
-
Alcohols
-
Iron
-
Acid
-
Ethanoates
-
An acid with the functional group -COOH
-
Nickel
-
Volatile acids of which Ethyl Ethanoate is an example
-
Platinum
Pregunta 18
Pregunta
Carboxylic acids do not ionise completely when dissolved in water.
Respuesta
- True
- False
Pregunta 19
Pregunta
What is the general formula for making esters?
Respuesta
-
Methanoic acid + ethanol ⇌ methyl ethanoate + CO2
-
alcohol + oxygen ⇌ ester + CO2
-
carboxylic acid + alcohol ⇌ ester + water
-
Carboxylic acid + water ⇌ ester + alcohol
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