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.
A student observes that camphor disappears when left in an open dish. Which process is responsible for this observation? (1) Melting (2) Boiling (3) Sublimation (4) Condensation
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?
A student observes that camphor disappears when left in an open dish. Which process is responsible for this observation? (1) Melting (2) Boiling (3) Sublimation (4) Condensation
Which of the following is an example of condensation? (1) Dew forming on grass (2) Ice melting (3) Water boiling (4) Dry ice subliming
Which of the following is an example of sublimation? (1) Ice melting (2) Water boiling (3) Dry ice turning into gas (4) Water freezing
Which of the following is NOT a state of matter? (1) Solid (2) Liquid (3) Gas (4) Energy
Fill in the blank: The process of a gas changing directly into a solid is called __________.
Fill in the blank: The process of a liquid changing into a gas at its boiling point is called __________.
Fill in the blank: The temperature at which a solid turns into a liquid is called its __________ point.
Freezing is the process of changing a liquid into a ________.
Is condensation the process of a gas changing into a liquid?
Is deposition the process where a gas changes directly into a solid?
Is melting an exothermic process?
True or False: All substances have the same melting and boiling points.
