EASY
AS and A Level
IMPORTANT
Earn 100

Calculate the volume occupied by 272 g of methane at a pressure of 250 kPa and a temperature of 54 °C.
 (R = 8.31 JK–1mol–1; Mr  methane = 16.0)
 

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Important Questions on States of Matter

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 5 - States of Matter>Question>Q 6

The pressure exerted by 0.25 mol of carbon monoxide in a 10 dm3 flask is 120 kPa. Calculate the temperature in the flask in Kelvin.

(R = 8.31 JK–1mol–1)

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 5 - States of Matter>Questions>Q 7
When 0.08g of liquid X was vaporised at 100 °C, 23 cm3 of vapour was formed. The atmospheric pressure was 1.02 × 105 Pa. Calculate the relative molecular mass of liquid X.
 (R = 8.31 JK–1mol–1)
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 5 - States of Matter>Questions>Q 8

A flask of volume 2 x 10-3 m3 contains 4.19 g of a gas. The pressure in the flask is 300 kPa and the temperature is 20°C.  R = 8.31 J K-1 mol -1.
You can find the relative molecular mass using the expression: 
                                                                                                    Question Image

Which one of the following gives the correct value for the relative molecular mass of the gas? 

Question Image

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 5 - States of Matter>Question>Q 9
Bromine is a reddish-brown liquid. Some liquid bromine is placed in a closed jar. The bromine starts to evaporate. The colour of the vapour above the liquid bromine becomes darker and darker. After a time the bromine vapour does not get any darker. Use ideas about moving particles to explain these observations.
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 5 - States of Matter>Question>Q 10
Explain the following: why are most metals strong, but ionic solids are brittle?
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 5 - States of Matter>Question>Q 10
Explain the following:
 
        why is an alloy of copper and tin stronger than either copper or tin alone?
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 5 - States of Matter>Question>Q 11

The table shows some properties of four elements. Use the data to answer the following questions. (Assume that steel has similar properties to iron.)

                        

                                                                                 Question Image

Why is aluminium with a steel core used for overhead electricity cables in preference to copper?
 

EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 5 - States of Matter>Question>Q 11

The table shows some properties of four elements. Use the data to answer the following questions. (Assume that steel has similar properties to iron.)

                        

                                                                                 Question Image


Suggest why many car engine blocks are made from aluminium alloys rather than from steel.