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 product of the reaction of but-2-ene with steam in the presence of a phosphoric acid catalyst?

2 / 10

Choose one of the following options:

3 / 10

What is the oxidation number of SULFUR in

S2O32-

4 / 10

What is the oxidation number of CARBON in methanoic acid

HCOOH

5 / 10

Which of these comparative statements are true?

(i) a calcium atom is larger than a calcium ion

(ii) a calcium atom has a larger radius than a magnesium atom

(iii) calcium has a smaller first ionisation energy than magnesium

(iv) a calcium ion is smaller than a magnesium ion

6 / 10

Analysis of a sample of potassium in a mass spectrometer shows that it consists of 93.2% potassium 39 and 6.8% potassium-41. What is the relative atomic mass of potassium?

7 / 10

Which one of the following is the electron configuration of a group 2 metal atom?

8 / 10

An element M has two electrons in its outer shell. An element X has seven electrons in its outer shell. What is the likely formula of the compound of X and Y?

9 / 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

10 / 10

In which of these elements are the atoms or molecules closely packed but free to move around sliding past each other at room temperature?

(i) mercury

(ii) argon

(iii) bromine

(iv) iodine

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