There is little attraction between particles of gas. Thus, gas particles move freely in all directions. Therefore, gas completely fills the vessel in which it is kept. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
There is little attraction between particles of gas. Thus, gas particles move freely in all directions. Therefore, gas completely fills the vessel in which it is kept.
The ability of a diver to cut through water in a swimming pool shows that matter is made up of particles. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
The ability of a diver to cut through water in a swimming pool shows that matter is made up of particles.
For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/ a) Water at 250°C exists in gaseous state. b) At 100°C, water can exist in both liquid and gaseous form. At this temperature, after getting the heat equal to the latent heat of vaporization, wRead more
a) Water at 250°C exists in gaseous state.
b) At 100°C, water can exist in both liquid and gaseous form. At this temperature, after getting the heat equal to the latent heat of vaporization, water starts changing from liquid state to gaseous state.
The mass per unit volume of a substance is called density (density = mass/volume). As the volume of a substance increases, its density decreases. Though ice is a solid, it has large number of empty spaces between its particles. These spaces are larger as compared to the spaces present between the paRead more
The mass per unit volume of a substance is called density (density = mass/volume).
As the volume of a substance increases, its density decreases.
Though ice is a solid, it has large number of empty spaces between its particles. These spaces are larger as compared to the spaces present between the particles of water. Thus, the volume of ice is greater than that of water. Hence, the density of ice is less than that of water. A substance with lower density than water can float on water. Therefore, ice floats on water.
1. Rigidity can be expressed as the tendency of matter to resist a change in shape. 2. Compressibility is the ability to be reduced to a lower volume when force is applied. 3. Fluidity is the ability to flow. 4. By filling a gas container we mean the attainment of shape of the container by gas. 5.ShRead more
1. Rigidity can be expressed as the tendency of matter to resist a change in shape.
2. Compressibility is the ability to be reduced to a lower volume when force is applied.
3. Fluidity is the ability to flow.
4. By filling a gas container we mean the attainment of shape of the container by gas.
5.Shape defines a definite boundary.
6. Kinetic energy is the energy possessed by a particle due to its motion.
7. Density is mass per unit volume.
Give reasons: A gas fills completely the vessel in which it is kept.
There is little attraction between particles of gas. Thus, gas particles move freely in all directions. Therefore, gas completely fills the vessel in which it is kept. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
There is little attraction between particles of gas. Thus, gas particles move freely in all directions. Therefore, gas completely fills the vessel in which it is kept.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?
The ability of a diver to cut through water in a swimming pool shows that matter is made up of particles. For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
The ability of a diver to cut through water in a swimming pool shows that matter is made up of particles.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
What is the physical state of water at: a) 250ºC b)100ºC ?
For more answers visit to website: https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/ a) Water at 250°C exists in gaseous state. b) At 100°C, water can exist in both liquid and gaseous form. At this temperature, after getting the heat equal to the latent heat of vaporization, wRead more
For more answers visit to website:
https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
a) Water at 250°C exists in gaseous state.
See lessb) At 100°C, water can exist in both liquid and gaseous form. At this temperature, after getting the heat equal to the latent heat of vaporization, water starts changing from liquid state to gaseous state.
Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why.
The mass per unit volume of a substance is called density (density = mass/volume). As the volume of a substance increases, its density decreases. Though ice is a solid, it has large number of empty spaces between its particles. These spaces are larger as compared to the spaces present between the paRead more
The mass per unit volume of a substance is called density (density = mass/volume).
As the volume of a substance increases, its density decreases.
Though ice is a solid, it has large number of empty spaces between its particles. These spaces are larger as compared to the spaces present between the particles of water. Thus, the volume of ice is greater than that of water. Hence, the density of ice is less than that of water. A substance with lower density than water can float on water. Therefore, ice floats on water.
For more answers visit to website:
See lesshttps://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-1/
Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
1. Rigidity can be expressed as the tendency of matter to resist a change in shape. 2. Compressibility is the ability to be reduced to a lower volume when force is applied. 3. Fluidity is the ability to flow. 4. By filling a gas container we mean the attainment of shape of the container by gas. 5.ShRead more
1. Rigidity can be expressed as the tendency of matter to resist a change in shape.
See less2. Compressibility is the ability to be reduced to a lower volume when force is applied.
3. Fluidity is the ability to flow.
4. By filling a gas container we mean the attainment of shape of the container by gas.
5.Shape defines a definite boundary.
6. Kinetic energy is the energy possessed by a particle due to its motion.
7. Density is mass per unit volume.