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WorksheetsQuiz States of Matter
Total questions: 20
Worksheet time: 40mins
Based on the diagram of pure substance X, choose the correct statement.
S is the critical point
Solid X and gas X exist in equilibrium at point T
The density solid X is higher than of liquid X
The melting point and boiling point increase with the increase in pressure
The phenomenon in which a steel needle can, with proper care, be made to float on the surface of water illustrates a property of liquids known as
surface tension
compressibility
polarisability
viscosity
According to the kinetic theory, particles of different gases at the same temperature have the same
volume
pressure
molecular speed
average kinetic energy
A mixture containing 7.0 g of N2 and 16.0 g of CH4 has a pressure of P. What is the partial pressure of N2 in the mixture?
3P
5P
7P
7 + 16P7P
A liquid boils when its
temperature is equal to 273K
vapour pressure is exactly 1 atm
temperature is greater than room temperature
vapour pressure is equal to or greater than external pressure
Which of the following quantities is independent of the type of attractive forces between molecules in liquid state?
Viscosity
Evaporation rate at a specific temperature
Enthalpy of fusion and vapourisation
Distribution of kinetic energy of molecules
Diamond cannot conduct electricity because
diamond has the structure of a giant covalent molecule
its carbon atoms form single covalent bonds
all of it valence electrons are used in forming covalent bonds
it has a high melting point
A liquid boils when its
temperature reaches room temperature
temperature is greater than room temperature
vapour pressure is exactly 1 atm
vapour pressure is equal to or greater than the external pressure
The following properties are associated with crystalline ionic solid EXCEPT
high melting point and hard
high melting point and brittle
hard and soluble in water
low melting point and good electrical conductors
Which of the following sets show the correct sequences of vapour pressure of the compounds.
P > S > Q
Q > P > T
S < Q < R
T < S < Q
The normal boiling point of acetone, methanol, ethanol, and benzene are 56oC, 65oC, 78oC and 80oC respectively. Which liquid is the fastest to attain a vapour pressure equal to 1 atm?
Methanol
Ethanol
Benzene
Acetone
Which of the following gases deviate least from ideal gas behaviour?
Ne
O2
Cl2
NH3
According to he kinetic molecular theory, particles of different gases at the same temperature have the same
volume
pressure
molecular speed
average kinetic energy
What is the density of Kr gas at STP?
3.74 gL-1
37.40 gL-1
7.48 gL-1
0.74 gL-1
A container has a volume of 8.306 L. When it is filled with nitrogen gas at 30oC, the pressure recorded was 906 torr. Calculate the mass of nitrogen gas assuming it is an ideal gas.
0.40 g
11.15 g
1.11 g
12.08 g
Choose the INCORRECT statement
The total pressure of a mixture of gas is the sum of partial pressure of the individual gas
Kinetic theory of gaseous postulates that the volume of the gas particle is too small, hence it can be ignored
Boyle's Law states that the volumes gas is directly proportional to its pressure
Large value a in the van der Waals equation for a real gas indicates a stronger attractive force between gas molecules
The diagram above shows two flasks connected by a valve, each flask contain gas A and gas B at temperature T. If both gases do not react, what is the total pressure at temperature T when gas is opened?
1.5 atm
2.5 atm
4.0 atm
6.0 atm
Vessel X and vessel Y contains 1.00 mol and 2.00 mol of nitrogen gas respectively. Both vessels are determined to have a temperature of 0oC and pressure of 350 mmHg. Which of the statements are true about these vessels?
Vessel X must have a volume of 22.4 L
The number of molecules in vessel X is is two times smaller than that of vessel Y
The average kinetics energy of molecules in vessel X is two times greater than that of vessel Y
The average speed of molecules in container Y is half of vessel X
Which of the following is not true about the phase diagram of water?
It consists of three phases
The solid/liquid line has a negative gradient
The solid/vapour line cuts the temperature axis at -273.15oC
The triple point of water is at 0oC and 1 atm
The vapour pressure of a liquid in a closed container depends on the
temperature
volume of the vapour
amount of liquid present
viscosity of liquid
