Question

1)Explain whether the following are physical or chemical changes. Give one reason for your answer.
Formation of curd
Ripening of fruit
Bending a glass tube by heating
Melting of wax
Formation of wine

Answer 1

Answer:

Chemical Change

Chemical Change

Physical change

Chemical Change

Chemical Change

Explanation:

In Q1,2,4,5 The change is occurring in the chemical properties of Substances and In Q3 the change is not in chemical but Physical changes

Answer 2

Formation of curd - Chemical

Ripening of fruit- Chemical

Bending a glass tube by heating- Physical

Melting of wax- Physical

Formation of wine- Chemical

Explanation:

• Changes can be of two types physical changes and chemical changes for stock in case of chemical change there is change in the molecular structure of the compound. Chemical changes are usually not reversible. Whereas physical changes results in the change in the physical properties of a substance.

• The change is reversible and the original substance can be brought again by changing the temperature of the Other physical parameters. melting of wax is a physical change because the wax can be made back into solid by cooling it..

To know more about physical changes,

are all physical changes are reversible if not give example - Brainly.in

https://brainly.in/question/2709536