Question

give three examples of physical changes.explain whether each change is slow or fast ,reversible or Irreversible, and man made or natural​

Answer 1

Answer:

All changes in the world are one of the two types – Reversible changes and irreversible changes. A change which can happen backward, that is, can be reversed is called a reversible change. If you keep water in the freezer for some time, it transforms into ice. But as soon as you take it out of the freezer, it turns into water again. This is a reversible change. Similarly, if you boil water, it evaporates and becomes water vapor. When you cool this vapor down, it turns back to water.

Answer 2

Answer:

During a physical change, only the physical properties of a substance change.

It is a reversible change. For example, melting of ice, during this change, the water changes from its solid form to liquid form. It can be solidified again.The water remains water in both the cases.also other examples Boiling water. Mixing sand and water

Explanation: