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 7
Describe what happens to the particles of a solid when it melts.
Describe what happens to the temperature of a substance during a change of state, such as melting or boiling.
Explain what happens to the arrangement of particles during condensation.
Explain why ice floats on water even though both are made of H2O.
Explain why sweating helps cool your body.
Is energy absorbed or released during freezing?
Is the process of boiling endothermic or exothermic?
What happens to the energy of particles when a liquid freezes?
What is the main difference between boiling and evaporation?
What is the main factor that causes a change in the state of matter?
What is the name of the process by which ice turns into water?
When water vapor cools down, it changes into which state?
Which process is the reverse of melting?
A sealed container contains both ice and water at 0 °C. If heat is slowly added, describe what happens to the temperature and the states of matter inside the container until all the ice has melted.
A student heats a beaker of water and notices bubbles forming throughout the liquid. What does this indicate about the state change occurring, and how is it different from evaporation?
Describe how the process of sublimation can be used to separate a mixture of ammonium chloride and sand.
Explain why substances like dry ice (solid carbon dioxide) are stored in tightly sealed containers.
Explain why the boiling point of water decreases at higher altitudes, and how this affects the interconversion of states of matter.
