Chemistry Year 12 Random Retrieval

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Chemistry Year 12 Random Retrieval

This quiz contains all the questions in the year 12 chemistry section. The website will pick 10 questions at random.

1 / 10

What is the formula of 2-bromo-3-methylpentane?

2 / 10

Chlorine disproportionates when it reacts with:

3 / 10

What are the standard conditions for measuring standard enthalpy changes?

4 / 10

Using enthalpies of formation ΔfH, calculate the enthalpy change for the following hydration process.

Na2S2O3(s) + 5H2O(l) => Na2S2O3•5H2O(s)

Select the data from the 'Selection of Enthalpies of Formation and Combustion' shown above.

If this question was generated from Random Retrieval, this data can also be found in TOOLS>Data Sheets.

5 / 10

What is the molar mass of calcium hydroxide?

6 / 10

How many moles of molecules are there in 0.240 g bromine?

7 / 10

During the electrolysis of molten sodium chloride:

(i) sodium metal forms at the negative electrode

(ii) sodium ions are reduced at the cathode

(iii) chloride ions lose electrons at the positive electrode

(iv) chlorine atoms are given off as a gas at the anode

8 / 10

Which of these compounds consist of molecules which are linear?

(i) water

(ii) beryllium chloride

(iii) sulfur dioxide

(iv) carbon dioxide

9 / 10

In which of these solids are there two types of bonding: one strong and one weak?

(i) diamond

(ii) ice

(iii) sodium chloride

(iv) graphite

10 / 10

Which of these true statements can help to explain why magnesium has a higher melting point than sodium:

(i) magnesium atoms/ions are smaller than sodium atoms/ions

(ii) the metallic bonds are stronger in magnesium than in sodium

(iii) a magnesium atoms contributes two bonding electrons not one

(iv) the first ionisation energy is higher for magnesium than for sodium.

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