29 Questions
What is the process of change of solid state into liquid state known as?
Fusion
Where does the heat energy go when a solid melts and its temperature remains the same?
It gets hidden into the contents
What term is used to describe heat energy absorbed by ice without showing a rise in temperature?
Latent heat
What is considered when heat energy is absorbed by ice without a rise in temperature?
Latent heat
What term refers to the amount of heat energy required to change 1 kg of a solid into liquid at its melting point?
Latent heat of fusion
What characteristic defines solids based on the text?
Maintaining shape under outside force
Why are solids described as having a 'negligible compressibility' in the text?
It is difficult to compress them by applying force
Based on the text, why is a sponge considered a solid even though it can be compressed?
It regains its shape after compression
Why do sugar and salt, when kept in different jars, take the shape of the jar based on the text?
They have distinct boundaries
What characteristic distinguishes liquids from solids according to the text?
Ability to flow easily
What happens when pouring a liquid from one container into another based on the text?
The shape of the liquid remains the same
What is the process of particles changing directly from a gaseous state to a solid state?
Deposition
Which phenomenon involves particles from the surface of a liquid gaining enough energy to change into the vapor state?
Evaporation
What measurable quantity is defined as the amount of heat energy required to change 1 kg of solid into a liquid at its melting point?
Latent heat of fusion
Which factor does NOT affect the rate of evaporation?
Volume
What is the heat energy required to change 1 kg of a liquid to gas at its boiling point known as?
Latent heat of vaporization
In which phenomenon do particles from the whole bulk of a liquid change into the vapor state?
Boiling
What conclusion can be drawn from the experiment involving dilution of potassium permanganate?
Even with dilution, the color of potassium permanganate remains visible.
What is a key characteristic of particles of matter according to the text?
There is enough space between particles of matter.
What is the main observation regarding the smell in the experiment using Dettol?
The smell of Dettol can be detected even on repeated dilution.
What does the experiment with ink and honey in water demonstrate?
Particles of one type of matter get into the spaces between particles of the other.
What does the observation about the small particles of matter suggest?
Particles of matter are extremely tiny and keep dividing into smaller particles.
In the experiment with incense stick, what can be inferred about detecting the smell?
The smell can be detected even at a distance from the incense stick.
What are the two types of classifications of matter based on?
Physical properties and chemical nature
How did ancient Indian philosophers classify matter?
As five basic elements called 'Panch Tatva'
What is one significant characteristic of matter?
It has mass and occupies space
According to early schools of thought, how was the nature of matter described?
As continuous like a block of wood
What will be discussed in subsequent chapters regarding matter?
Chemical aspects of matter
What is not a common characteristic of all matter?
It has no physical properties
Learn about matter and its properties through examples of different substances in our surroundings. Understand concepts such as mass, space occupation, and the composition of the universe.
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