Question

what are physical change ? give examples.
​

Answer 1

Hola !!!!!

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition

Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density. An example of a physical change is the process of tempering steel to form a knife blade.

Answer 2

In a physical change,appearance changes, but substance remains same.

For example;

Ice on melting converts to water. Water on evaporation converts to water vapor. All the products formed are still forms of water. Hence, this is a physical change.