Irreversible because the ordered arrangement of molecules in the ice crystals is lost and the entropy increases. Irreversible because the ordered arrangement of molecules in the ice crystals is lost and the entropy increases.
No, it is not reversible as you can't get the ingredients to make the jelly back. Therefore it is an irreversible change. (first message on Answers.com.) This is what I thought originally as well; however, jelly is only a disolved into the water. It will change state to a solid when cooled, but, when heated, it will melt. If heated (slowly) the water will evaporate and leave the jelly crytals behind. Sort of like salty water. They might not look the same, but the water will return to its original state. Thus, jelly is a reversible change.
When ice cream melts, it undergoes a physical change. The change is reversible, as the process involves a phase change from solid to liquid without any change in the chemical composition of the ice cream.
Melting ice cream is a physical change because it has the ability to go back to it's frozen form and be ice cream again. The chemical identity of it isn't changed.
Ice cream melting is a physical change because it is a change in state from solid to liquid without altering the chemical composition of the ice cream. The process involves a change in the arrangement and spacing of the ice cream molecules as they gain energy and transition to a less ordered state.
Preparation of cream from milk is a physical process.
No, it is not reversible as you can't get the ingredients to make the jelly back. Therefore it is an irreversible change. (first message on Answers.com.) This is what I thought originally as well; however, jelly is only a disolved into the water. It will change state to a solid when cooled, but, when heated, it will melt. If heated (slowly) the water will evaporate and leave the jelly crytals behind. Sort of like salty water. They might not look the same, but the water will return to its original state. Thus, jelly is a reversible change.
Some examples of reversible objects include rubber bands, paper clips, and elastic hair ties. These objects can return to their original shape after being deformed. On the other hand, irreversible objects include broken glass, melted ice cream, and burnt paper, as they cannot return to their original state once changed.
Yes, the icecream can be frozen again.
No
Yes it is
Yes it is
When ice cream melts, it undergoes a physical change. The change is reversible, as the process involves a phase change from solid to liquid without any change in the chemical composition of the ice cream.
Melting ice cream is a physical change because it has the ability to go back to it's frozen form and be ice cream again. The chemical identity of it isn't changed.
Ice cream melting is a physical change because it is a change in state from solid to liquid without altering the chemical composition of the ice cream. The process involves a change in the arrangement and spacing of the ice cream molecules as they gain energy and transition to a less ordered state.
Preparation of cream from milk is a physical process.
The ice cream cone was undergoing a physical change known as melting. Melting is the process where a solid substance, like ice cream, changes to a liquid state due to an increase in temperature.
A chemical change occurs when a new species is formed, and is generally not reversible. A physical change can usually be reversed as in the case of instant coffee. The coffee goes from a solid to a solution. Evaporation of the water would give the coffee back as a solid.