myramonsivais14 myramonsivais14

30-09-2020
Chemistry

contestada

Which of the following observations is usually not evidence of a chemical change ?
A. Change of shape
B . Formation of a precipitate
C.Giving off of a gas
D.giving off heat and/or light

Respuesta :

precious6103azuaru precious6103azuaru

10-10-2020

Answer:

D

Explanation:

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nikitarahangdaleVT nikitarahangdaleVT

21-04-2022

Among the following observations which is usually not evidence of a chemical change is change of a shape.

What is chemical change?

Chemical changes will occur when the composition of the substance is changes internally or converted into any new product.

Change of shape is an example of physical change as it is not essential if shape changes then chemical properties also changes.
Formation of a precipitate is a chemical process because in this process any new substance is formed.
Giving off a gas is also a chemical process as in this change an extra product is released.
Giving off heat or light is also a chemical change because this heat will be calculated as a energy.

So, change of shape is not a chemical change.

To know more about chemical change, visit the below link:

https://brainly.com/question/26018275

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