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 8
A student heats a beaker of ice at 0°C. What will happen to the temperature of the ice as it melts?
At what temperature does pure water boil at standard atmospheric pressure?
Define melting point.
Describe the energy changes that occur during freezing.
A student heats a beaker of ice at 0°C. What will happen to the temperature of the ice as it melts?
If the freezing point of a substance is -5°C, at what temperature will it start to melt?
A 100 g sample of ice at 0°C is heated until it becomes water at 0°C. Calculate the amount of heat required if the latent heat of fusion of ice is 334 J/g.
A scientist cools a sample of carbon dioxide gas at standard pressure. Instead of forming a liquid, it changes directly into a solid. What is this process called, and why does it occur for carbon dioxide?
During which process does a substance release energy to its surroundings?
(1) Melting
(2) Boiling
(3) Condensation
(4) Sublimation
Which of the following is an endothermic process?
(1) Freezing
(2) Condensation
(3) Melting
(4) Deposition
Which of the following is an example of deposition?
(1) Frost forming on a cold window
(2) Water boiling
(3) Ice melting
(4) Alcohol evaporating
Which of the following is NOT a process of interconversion of states of matter?
(1) Melting
(2) Freezing
(3) Evaporation
(4) Filtration
Fill in the blank: The process of changing a gas to a solid is called ________.
Fill in the blank: The process of changing a liquid to a gas at any temperature below its boiling point is called ________.
Fill in the blank: The process of changing a solid to a liquid is called ________.
The process of changing a gas directly into a solid is called ________.
Is evaporation a cooling process?
True or False: All substances have the same melting and boiling points.
True or False: Boiling and evaporation are both processes that convert a liquid into a gas.
True or False: Condensation is the process where a gas changes into a liquid.
