Question

What is the difference between a chemical and a physical change?

Answer 1

A physical change is a change in the physical properties of a substance without changing its chemical composition. Physical changes are typically reversible, and they do not change the chemical structure of a substance. Examples of physical changes include changes in state (solid, liquid, gas), changes in color, changes in shape, and changes in texture.

On the other hand, a chemical change is a change in the chemical composition of a substance. When a chemical change occurs, one or more substances are converted into one or more new substances that have different chemical properties. Chemical changes are typically irreversible. Examples of chemical changes include the burning of wood, the rusting of iron, and the reaction of vinegar with baking soda to produce carbon dioxide gas.

Answer 2

Physical changes do not create new matter. Chemical changes are always accompanied by one or more new substances Physical changes are easily reversible, ie. H. the original actor can be restored. Chemical changes are irreversible, that is the original item cannot be restored.

Answer 3

Chemical and physical changes are two types of changes that can occur in matter. The main difference between them is that a chemical change involves a chemical reaction that results in the formation of a new substance with different properties, while a physical change involves a change in the physical appearance or state of a substance.

Answer 4

chemical change involves the formation of new substances with different chemical properties, while a physical change does not alter the composition or identity of the substance.

Answer 5

A chemical change occurs when the molecular structure of a substance is altered, resulting in the formation of a new substance. A physical change, on the other hand, involves a change in the physical properties of a substance, such as its shape, size, or state of matter, without altering its molecular structure. Examples of chemical changes include burning, rusting, and fermentation, while examples of physical changes include melting, freezing, and evaporating.

Answer 6

A physical properties are the following

It is easy reversable 

No new substance is formed 

It does not involve great change exept latent heat

Then chemical changes are just the opposite of the physical changes.

Answer 7

The difference between chemical and physical change is: 

Chemical change is chemically combined therefore is not reversible and that is why is also called permanent change.. There's new product formed

Physical change is  also known as reversible change. It is physically combined and there's no new product formed.