Question

define physicl and chamical changes wiyh one example of each​

Answer 1

Answer:

A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity.

Examples of chemical changes are burning, cooking, rusting, and rotting.

Examples of physical changes are boiling, melting, freezing, and shredding.

Often, physical changes can be undone, if energy is input. The only way to reverse a chemical change is via another chemical reaction.Examples of Chemical Changes

A new compound (product) results from a chemical change as the atoms rearrange themselves to form new chemical bonds.

Burning wood

Souring milk

Mixing acid and base

Digesting food

Cooking an egg

Heating sugar to form caramel

Baking a cake

Rusting of iron

Examples of Physical Changes

No new chemical species forms in a physical change. Changing the state of a pure substance between solid, liquid, and gas phases of matter are all physical changes since the identity of the matter does not change.

Crumpling a sheet of aluminum foil

Melting an ice cube

Casting silver in a mold

Breaking a bottle

Boiling water

Evaporating alcohol

Shredding paper

Sublimation of dry ice into carbon dioxide vapor

Answer 2

Answer:

Physical changes are the changes in which the physical properties of a substance undergoes a change and in chemical changes the chemical properties of a substance undergoes a change.

Physical change example- tearing of paper

Chemical change example- burning of paper

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