Question

what are physical changes? give two examples

Answer 1

Physical changes are the changes that affect the form of the substance,but not its chemical composition ie. the physical properties(shape,size,state of matter,etc.) of the new substance formed is different from the original one but the chemical properties remain the same.
In these changes,no chemical reaction takes place and these changes are Usually physical changes are reversible.

Some examples of physical change are
Melting of ice,freezing of water,inflating a balloon,melting of wax,etc.



Hope it helps...!

Answer 2

Answer:

• A change in the chemical makeup of matter is referred to as a chemical change. Most people refer to it as a chemical reaction.

Explanation:

• Chemical characteristics vary among different substances. Substances vary in their reactivity in accordance with this feature.
• A new product emerges from a chemical process. A chemical change occurs when molecules' bonds with one another break, changing the substance's makeup. In other words, chemical change causes bonds to form and break.

Examples of Physical Change:

• Physical changes include adjustments to the composition or size of matter.
• Physical changes include changes in state, such as going from a solid to a liquid or a liquid to a gas.
• Physical changes can be made by a number of techniques, including cutting, bending, dissolving, freezing, boiling, and melting.

#SPJ6