MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Nitrogen and hydrogen react together to form ammonia.$N_2 + 3H_2 \rightarrow 2NH_3$When completely converted, 7 tonnes of nitrogen gives 8.5 tonnes of...

2009 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Which relative molecular mass, $M_r$, is \textbf{not} correct for the molecule given?[Table_1]

2009 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Nitrogen and hydrogen react together to form ammonia.$$\text{N}_2 + 3\text{H}_2 \rightarrow 2\text{NH}_3$$When completely converted, 7 tonnes of nitro...

2009 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Which relative molecular mass, $M_r$, is not correct for the molecule given? [Table_1]

2009 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

For each atom of carbon present in a molecule, there is an equal number of atoms of oxygen but twice as many atoms of hydrogen. What is the formula of...

2009 Winter

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Water is formed when 48 g of oxygen combine with 6 g of hydrogen.What mass of oxygen combines with 2 g of hydrogen?

2009 Winter

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

For each atom of carbon present in a molecule, there is an equal number of atoms of oxygen but twice as many atoms of hydrogen. What is the formula o...

2009 Winter

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Water is formed when 48 g of oxygen combine with 6 g of hydrogen.What mass of oxygen combines with 2 g of hydrogen?

2009 Winter

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Hydrogen and chlorine react as shown.1 molecule of hydrogen + 1 molecule of chlorine \rightarrow 2 moles of hydrogen chloride.What is the equation for...

2010 Summer

MCQ

CH5 - REACTING MASSES AND CHEMICAL EQUATIONS

Hydrogen and chlorine react as shown. 1 molecule of hydrogen + 1 molecule of chlorine → 2 molecules of hydrogen chloride What is the equation for ...

2010 Summer

Theory

CH4 - ATOMS COMBINING

(a) A list of compounds is shown.aluminium oxidecalcium bromidecalcium oxideethaneethenehydrogen chloridemethanenitrogen dioxidepotassium iodidepotass...

2020 Spring

Theory

CH14 - MAKING USE OF METALS

Iron is extracted by heating a mixture of coke (carbon), limestone and iron ore in air in a blast furnace.A diagram of the blast furnace is shown.(a) ...

2020 Spring

Theory

CH15 - AIR AND WATER

Water is essential for many industrial processes.(a) State one use of water in industry..................................................................

2020 Spring

Theory

CH17 - ORGANIC CHEMISTRY

Angelic acid and ethanoic acid are both carboxylic acids.The structure of angelic acid is shown.(a) (i) On the structure of angelic acid, draw a circl...

2020 Spring

Theory

CH12 - THE PERIODIC TABLE

The table shows some properties of four metals in Group I of the Periodic Table.[Table_1](a) Complete the table to estimate:• the melting point of r...

2020 Spring

Theory

CH11 - ACIDS AND BASES

This question is about the reactions of magnesium with nitric acid.(a) The equation for the reaction of magnesium with concentrated nitric acid is sho...

2020 Spring

Theory

CH1 - STATES OF MATTER

(a) The electrolysis of dilute sulfuric acid produces gases at both electrodes.(i) The incomplete apparatus is shown.Complete the diagram by:- labelli...

2020 Spring

Theory

CH4 - ATOMS COMBINING

(a) The structures of four substances C, D, E and F, are shown.(i) Which one of these substances, C, D, E or F, is a gas at room temperature?............

2020 Spring

MCQ

CH1 - STATES OF MATTER

Nitrogen is heated in a balloon, which expands slightly. Which statements about the molecules of nitrogen are correct? 1. They move further apart. 2...

2020 Summer

MCQ

CH1 - STATES OF MATTER

Which piece of apparatus should be used to measure exactly 21.4 \text{ cm}^3 of water?

2020 Summer