Question

2. Define a physical and a chemical change. Give an example of each.
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Answer 1

Answer:

Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.

Chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. ... An example of a chemical change is the reaction between sodium and water to produce sodium hydroxide and hydrogen.

Explanation:

Phy Example - Melting of ice cube

Chem Example - Boiling of egg

Answer 2

ANSWER

Physical change is a type of change where the physical properties of matter change.

example:- Crushing a can, melting of ice

A chemical change is a type of change where the chemical properties of matter change. It is commonly called a chemical reaction.

example:- Combustion, rusting

EXPLANATION

Hope it helps