Chemistry Random Retrieval Y12

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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

Why is ethanol a liquid while propane is a gas? (Relative atomic masses: C = 12, H = 1, O = 16)

2 / 10


Choose one of the following options:

3 / 10

An example of a p-block element is:

4 / 10

All the oxides of the metals Mg, Ca, Sr and Ba:

(i) are basic

(ii) consist of giant structures of ions

(iii) form nitrates when they react with dilute nitric acid

(iv) are freely soluble in water

 

5 / 10

In which of these molecules do the intermolecular forces arise largely from attractions between temporary dipoles?

6 / 10

The isotopes of an element have the same:

(i) relative atomic mass

(ii) atomic number

(iii) mass number

(iv) electron configuration.

7 / 10

What is the electronic configuration of bromine? Enter your answer in the following format 1s2 2s2 etc. (note the space between each sub-shell!) Follow the aufbau order of sub-shell filling.

8 / 10

How many complete sub-shells are there in the phosphorus atom?

9 / 10

Which of these compounds consists of a giant structure of ions?

10 / 10

The amount in moles of iodide ions oxidised by one mole of chlorine molecules is:

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19

Foundations in Chemistry Random Retrieval

This quiz contains all the questions in the Foundations in Chemistry section. The website will pick 10 questions at random.

1 / 10

In which of these reactions is the first named element reduced:

(i) hydrogen reacting with copper(II) oxide to form copper and water

(ii) iodine reacting with chlorine to form iodine monochloride

(iii) aluminium reacting with chromium(III) oxide to form aluminium(III) oxide and chromium

(iv) iodine reacting with aluminium to form aluminium iodide

2 / 10

Which of these compounds dissolve in water and react to form a solution containing hydroxide ions:

(i) sodium oxide

(ii) ammonium chloride

(iii) ammonia

(iv) sodium chloride

3 / 10

Which of these compounds is an acid?

4 / 10

According to the ideal gas equation, pV = nRT, for a fixed amount of gas:

(i) p is proportional to T at constant volume

(ii) pV is a constant at constant temperature

(iii) V is proportional to T at constant pressure

(iv) RT is a constant at constant volume

5 / 10

The pressure of a gas results from:

6 / 10

What is the bond angle found in SO42-?

7 / 10

How many shared pairs of electrons are there in an ethene molecule, C2H4?

8 / 10

At room temperature, in the crystal lattice of an ionic compound the ions are:

(i) arranged symmetrically

(ii) uncharged

(iii) held together by electrostatic forces

(iv) stationary

9 / 10

How many filled orbitals are there in the neon atom?

10 / 10

What is the electron configuration of sulfur?

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8

Period Table & Energy Random Retrieval

This quiz contains all the questions in the Period Table & Energy section. The website will pick 10 questions at random.

1 / 10

Each of these statements is true. From which statement is it possible to predict, by application of Le Chatelier's principle that the solubility of sodium hydroxide increases with temperature?

2 / 10

Calculate the value of the standard enthalpy change of formation of methane given that the values for standard enthalpy changes of combustion are -890 kJ mol-1 for methane, -393 kJ mol-1 for carbon and -286 kJ mol-1 for hydrogen gas.

3 / 10

An example of an endothermic change is the:

4 / 10

A solution of Br2 and KI were mixed. Then shaken with cyclohexane. Which is correct?

(i) the bromine is reduced

(ii) the cyclohexane layer goes brown

(iii) the cyclohexane layer goes purple

(iv) the iodine is reduced

5 / 10

When chlorine reacts with cold, aqueous sodium hydroxide the ions formed are:

6 / 10

The electron configuration of a chloride ion is:

7 / 10

All the oxides of the metals Mg, Ca, Sr and Ba:

(i) are basic

(ii) consist of giant structures of ions

(iii) form nitrates when they react with dilute nitric acid

(iv) are freely soluble in water

 

8 / 10

What is the oxidation number of SULFUR in

SO42-

9 / 10

Which of these statements about atomic and ionic radii are true?

(i) Atomic radii increase down group 2

(ii) Ionic radii increase down group 7

(iii) Atomic radii decrease across period 3

(iv) In period 3 the ionic radii are smaller than the atomic radii

10 / 10

An example of a p-block element is:

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20

Core Organic Chemistry Random Retrieval

This quiz contains all the questions in the Core Organic Chemistry section. The website will pick 10 questions at random.

1 / 10


Choose one of the following options:

2 / 10


Choose one of the following options:

3 / 10

The number of peaks in the mass spectrum of an element indicates the number of:

4 / 10

Which is the correct sequence of events that takes place in a modern mass spectrometer in the production of a mass spectrum from a sample of an element or compound?

5 / 10

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

6 / 10

What type of reaction takes place on passing the vapour of ethanol over hot aluminium oxide? (Water and an alkene are produced)

7 / 10

An alcohol consists of 64.9% carbon, 13.5% hydrogen and 21.6% oxygen.

What is the molecular formula of the compound? (Relative atomic masses: C = 12, H = 1, O = 16)

8 / 10

The reagent which converts hex-1-ene to dibromohexane is:

9 / 10

At a high temperature in the presence of steam, the alkane C16H24 reacts to form a mixture of ethene, propene and ethane. This is an example of:

10 / 10

What is the name for this structure:

CH3CH(CH3)CH(CH3)CH2CH3?

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