Answer:

No, there is no change in mass when a substance changes its state. This principle is known as the law of conservation of mass, which states that the total mass of a closed system remains constant during a physical or chemical change.

During a change of state, such as solid to liquid or liquid to gas, the arrangement and energy of the particles within the substance change, but the total number of particles and their mass remain the same.

For example, consider a piece of ice melting into water. The ice is a solid state, and when heat is applied, it undergoes a phase change into water, which is a liquid state. Throughout this process, the mass of the system remains unchanged. The mass of the ice equals the mass of the resulting water. This is because the particles in the ice and water are the same, and only the arrangement and energy levels of the particles have altered.

The law of conservation of mass holds true for all changes of state, ensuring that mass is conserved regardless of the physical transformation occurring.

hope it helped

Answer:

When a substance changes its state , there will not be any change in the mass of substance . For example , if we change 100 grams of water (liquid) to ice(solid) , the mass of ice will be same i.e., 100 grams . This shows there is no change in the mass even if a substance changes its state.