Minghua Yin
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Chemistry FTW!

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Minghua Yin
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OCR AS Level Chemistry - Modules 2 & 3

Question 1 of 20

1

Who does the worst Yoda impression?

Select one of the following:

  • Yousuf

  • Neil

  • Ming

  • Dr Matthews

Explanation

Question 2 of 20

1

Fill the blank spaces to complete the text.

Complete the following definition of the first ionisation energy:

The energy required to one from each atom in of to form of .

Explanation

Question 3 of 20

1

How many p-orbitals make up one p-subshell?

Select one of the following:

  • 1

  • 2

  • 3

  • 4

  • 5

Explanation

Question 4 of 20

1

Fill the blank spaces to complete the text.

Complete the following definition of relative atomic mass:

The average mass of an atom of an relative to of the mass of a atom.

Explanation

Question 5 of 20

1

The first ionisation energy of boron is higher than the first ionisation energy of beryllium.

Select one of the following:

  • True
  • False

Explanation

Question 6 of 20

1

Fill the blank spaces to complete the text.

Complete the following processes that occur during mass spectrometry in the correct order:

Vaporisation




Recording

Explanation

Question 7 of 20

1

Fill the blank spaces to complete the text.

Fill in the blanks:

To 2 decimal places, Avogadro's constant is × .

Explanation

Question 8 of 20

1

Fill the blank space to complete the text.

Fill in the blanks:

The y-axis of a mass spectrum is the percentage abundance of an isotope. The x-axis is mass/ ratio.

Explanation

Question 9 of 20

1

What is room temperature and pressure?

Select one of the following:

  • 20 degrees Celsius, 101 kPa

  • 25 degrees Celsius, 101 kPa

  • 25 degrees Celsius, 100 kPa

  • 20 degrees Celsius, 100 kPa

Explanation

Question 10 of 20

1

What are "standard conditions"?

Select one of the following:

  • 298 K, 100 kPa

  • 293 K, 100 kPa

  • 298 K, 101 kPa

  • 293 K, 101 kPa

Explanation

Question 11 of 20

1

Fill the blank spaces to complete the text.

Fill in the blanks to complete the Ideal Gas Equation:

p = R

Explanation

Question 12 of 20

1

In the Ideal Gas Equation, what is volume measured in?

Select one of the following:

  • dm^3

  • m^3

  • cm^3

  • litres (because Dr Matthews says that dm^3 aren't proper units)

Explanation

Question 13 of 20

1

A C-Cl bond is polar.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 20

1

Fill the blank space to complete the text.

Fill in the blank:

The strength of London forces is primarily determined by the number of .

Explanation

Question 15 of 20

1

Fill the blank space to complete the text.

Fill in the blank:

The bond angle of the Cl-P-Cl bond in PCl_3 is degrees.

Explanation

Question 16 of 20

1

What is the oxidation number of sulfur in Na₂S₄O₆?

Select one of the following:

  • +2.5

  • +3.5

  • +2

  • +4

  • +3

  • -2.5

  • -3

  • -4

  • -3.5

Explanation

Question 17 of 20

1

Fill the blank spaces to complete the text.

Sort the period 3 non-metals (silicon, phosphorus, sulfur, chlorine, argon) in order of increasing boiling points:

, , , ,

Explanation

Question 18 of 20

1

What colour flame do strontium ions make when burned?

Select one of the following:

  • Brick red

  • Crimson red

  • Apple green

Explanation

Question 19 of 20

1

A homogeneous catalyst is used in the contact process.

Select one of the following:

  • True
  • False

Explanation

Question 20 of 20

1

Fill the blank spaces to complete the text.

Hydrogen bonding only occurs when which atoms are bonded to hydrogen? Write them below in order of decreasing strength of the hydrogen bond (FULL words, not symbols):

, ,

Explanation

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