Interconversion of States of Matter
Chemistry ⇒ States of Matter
Interconversion of States of Matter starts at 6 and continues till grade 12.
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See sample questions for grade 12
A sample of ice at 0°C is heated at 1 atm pressure. Describe the sequence of phase changes that will occur as the temperature increases to 120°C.
A substance has a melting point of -10°C and a boiling point of 50°C at 1 atm. What is its physical state at 25°C and 1 atm?
At what temperature and pressure do all three states of matter coexist in equilibrium?
Calculate the amount of heat required to convert 10 g of ice at 0°C to water at 0°C. (Given: ΔHfus for water = 334 J/g)
Calculate the energy required to vaporize 20 g of water at 100°C. (ΔHvap for water = 2260 J/g)
Describe the changes in kinetic energy of particles during condensation.
Describe the effect of impurities on the melting point of a solid.
Describe what happens to the arrangement and movement of particles during melting.
Explain the difference between melting and freezing in terms of energy change and particle movement.
Explain why evaporation causes cooling.
Explain why naphthalene balls become smaller in size when left open to air.
Explain why pressure affects the boiling point of a liquid.
Explain why the enthalpy of vaporization is much higher than the enthalpy of fusion for most substances.
Name the process by which water vapor changes into ice without becoming liquid.
