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C3 test

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10jonty.bird
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Difficult C3 quiz - all the stuff I didn't know

Question 1 of 19

1

Temporary hard water contains . . . . ions, these decompose to form carbonate ions.

Select one of the following:

  • hydrogen

  • Carbon

  • Magnesium

  • Hydrogencarbonate

  • Calcium

Explanation

Question 2 of 19

1

Permanent hard water can be made soft by:

Select one or more of the following:

  • Ion exchange tower

  • Adding sodium carbonate

  • Mixing it with lather

  • Boiling it

Explanation

Question 3 of 19

1

Water filters contain . . ., . . ., and (. . . exchange resins) can improve the taste of the water. (only last unknown applies to the exchange resins.)

Select one or more of the following:

  • Magnesium

  • Carbon

  • Silver

  • Water

  • Boron

  • Ion

Explanation

Question 4 of 19

1

In the equation Q = mc ΔT. What does the m stand for?

Select one of the following:

  • Mass of liquid heated

  • Specific head capacity of the liquid

  • Energy transferred

  • Number of moles

Explanation

Question 5 of 19

1

In the equation Q = mc ΔT. What does the c stand for?

Select one of the following:

  • Mass of liquid heated

  • Final temperature

  • Specific heat capacity of the liquid

  • Change in time

Explanation

Question 6 of 19

1

What provides a different pathway for a chemical reaction that has a lower activation energy?

Select one of the following:

  • Carbonates

  • Increase in pressure

  • Increase in temperature

  • Catalysts

Explanation

Question 7 of 19

1

Aluminium, Calcium and Magnesium react with what to from a white precipitate?

Select one of the following:

  • Carbon hydroxide solution

  • Silver nitrate solution

  • Sodium hydroxide solution

  • barium hydroxide solution

Explanation

Question 8 of 19

1

What is the ONLY precipitate that dissolves in excess sodium hydroxide solution

Select one of the following:

  • Calcium hydroxide

  • Aluminium hydroxide

  • Copper hydroxide

  • Magnesium hydroxide

  • Titanium hydroxide

Explanation

Question 9 of 19

1

Carbonates react with what to form CO2.

Select one of the following:

  • Weak acids

  • Weak alkaline

  • Strong acids

  • Strong alkaline

Explanation

Question 10 of 19

1

Halide Ions + what + what makes precipitates (of varying colours)

Select one or more of the following:

  • Barium Nitrate Solution

  • Sodium hydroxide solution

  • Strong Acid

  • Silver nitrate solution

  • Nickel catalyst

  • Weak Acid

  • Oxygen

Explanation

Question 11 of 19

1

Methanol, Ethanol and Propanol dissolve in water to form a solution that is . . .

Select one or more of the following:

  • Strongly Acidic

  • Neutral

  • Strongly alkaline

  • Weakly acidic

  • weakly alkaline

Explanation

Question 12 of 19

1

Methanol, Ethanol and Propanol also react with . . . . to produce . . . . gas.

Select one or more of the following:

  • CO2

  • Sodium hydroxide solution

  • Ethanoic acid

  • Oxygen

  • Potassium

  • Sodium

  • Hydrogen

  • Iron (II)

Explanation

Question 13 of 19

1

Ethanol is oxidised to

Select one of the following:

  • Ethanoic Acid

  • Ethyl ethanoate

  • Ethene

  • Methane

  • Alcohol

Explanation

Question 14 of 19

1

Ethanoic acid is the main acid in . . .

Select one of the following:

  • Hydrochloric Acid

  • Citric Acid

  • Vinegar

  • Lemon Juice

  • Car Batteries

Explanation

Question 15 of 19

1

Carboxylic Acids dissolve in water to produce . . . . solutions

Select one of the following:

  • Alkaline

  • Neutral

  • Acidic

  • Non-existent

Explanation

Question 16 of 19

1

Carboxylic Acids react with carbonates to produce . . .

Select one of the following:

  • Carbonates of the Carboxylic variety

  • Water

  • Hydrogen

  • CO2

  • Acids

Explanation

Question 17 of 19

1

Carboxylic Acids react with alcohols in the presence of a(n) . . . . catalyst to produce . . . .

Select one or more of the following:

  • Alcohols

  • Iron

  • Acid

  • Ethanoates

  • An acid with the functional group -COOH

  • Nickel

  • Volatile acids of which Ethyl Ethanoate is an example

  • Platinum

Explanation

Question 18 of 19

1

Carboxylic acids do not ionise completely when dissolved in water.

Select one of the following:

  • True
  • False

Explanation

Question 19 of 19

1

What is the general formula for making esters?

Select one or more of the following:

  • Methanoic acid + ethanol ⇌ methyl ethanoate + CO2

  • alcohol + oxygen ⇌ ester + CO2

  • carboxylic acid + alcohol ⇌ ester + water

  • Carboxylic acid + water ⇌ ester + alcohol

Explanation

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