Question

Why is it unnecessary to write an equation for a physical change

Answer 1

Answer:

its uneccesary to write an equation for a phusical change cause physcial change doesnt involve any kind of cjemical reacttion and hence properties of new substance dont chage. therfore its unnecessary to do so.

Answer 2

Answer:

• It is unnecessary to write an equation for a physical change because of  the following reasons:
• A chemical equation
• is used to represent any type of chemical reaction in which a reactant (Substance) is converted into new substances under some specific conditions. This kind of reaction is a process that happens when two or more than two substances interact to produce a new product. When a material
• changes phase during physical changes
• , it only changes physically but the substance chemical structure is still the same. For example, the chemical structure of water is the same whether it is in  a solid state (ice), liquid, or gaseous state.
• So, it is not
• necessary
• to write an
• equation for a physical change .

Explanation:

• Physical changes are reversible . It does not produce a new substance. For example, an ice cube can melt into liquid water and the liquid water can be frozen back into an ice cube again.
• The material involved in a physical change,  is structurally the same before and after the change.
• Some common Physical changes  are: Texture, Color, Temperature, Shape, Change of State .

For similar kind of answers, click here ->

https://brainly.in/question/9253556

https://brainly.in/question/49233435