Chemistry 9701/21 — October/November 2020

Cambridge AS Level · AS Level Structured Questions · worked solutions for every part, with the mark scheme

questions

marks

minutes

Topics Chemical Bonding · Atomic Structure · Chemical Periodicity · Carbonyl Compounds · Introduction to Organic Chemistry · States of Matter · +12 more

Q1Atomic StructureFree sample

The graph shows the first ionisation energies of some of the elements in Group 2.

Fig. 1.1

(a)

Write an equation for the first ionisation energy of Mg.

Include state symbols.

(b)

Explain the observed trend in first ionisation energies down Group 2.

(c)

The second ionisation energy of Be is $1757 \text{ kJ mol}^{-1}$ .

Explain why the second ionisation energy of Be is higher than the first ionisation energy of Be.

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3 more questions

Q2Chemical Periodicity · States of Matter · Equilibria · Nitrogen and Sulfur · Group 2 · Chemical Energetics · Chemical Bonding · Electrochemistry21M
Q3Chemical Bonding · Atomic Structure · Chemical Periodicity · Hydroxy Compounds · Carbonyl Compounds · Carboxylic Acids and Derivatives · Introduction to Organic Chemistry · Nitrogen Compounds · Analytical Techniques17M
Q4Group 17 · Chemical Bonding · Halogen Compounds · Hydrocarbons · Introduction to Organic Chemistry · Carbonyl Compounds16M

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