Change of State
Physics ⇒ Heat and Thermodynamics
Change of State starts at 8 and continues till grade 12.
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See sample questions for grade 8
A block of ice is left in a warm room. Describe the changes of state it undergoes and the energy changes involved.
A student heats a beaker of ice at 0°C. What will happen to the temperature of the ice as it melts?
Describe what happens to the kinetic energy of particles during condensation.
Describe what happens to the temperature of a substance during a change of state, such as melting or boiling.
Explain what happens to the particles of a substance when it melts.
Explain why ice floats on water even though both are made of H2O.
A block of ice is left in a warm room. Describe the changes of state it undergoes and the energy changes involved.
A student heats a beaker of ice at 0°C. What will happen to the temperature of the ice as it melts?
During which change of state do particles lose energy? (1) Melting (2) Boiling (3) Freezing (4) Sublimation
Which of the following best describes evaporation? (1) It occurs only at the boiling point. (2) It occurs at the surface of a liquid at any temperature. (3) It occurs only in solids. (4) It requires the liquid to be frozen first.
Which of the following changes of state involves the greatest increase in particle movement? (1) Freezing (2) Melting (3) Boiling (4) Condensation
Which of the following changes of state is endothermic? (1) Freezing (2) Condensation (3) Melting (4) Deposition
Fill in the blank: The energy absorbed or released during a change of state without changing temperature is called ________ heat.
Fill in the blank: The process of a gas changing into a liquid is called ________.
Fill in the blank: The process of a liquid changing into a solid is called ________.
Fill in the blank: The process of a solid changing directly into a gas is called ________.
Is condensation the reverse process of evaporation?
Is freezing an exothermic process?
Is it true that evaporation can occur at any temperature?
Is the process of melting reversible?
