Give two charactersitics each of physical and chemical changes?
Answers
In the physical change, alteration in the physical characteristics of the substance is saw, such as size, shape, texture, smell, appearance, density and so on. On the other hand, chemical change includes the alteration in chemical properties of the substance, i.e. change in its chemical nature.
Answer:
A physical change involves a change in physical properties. Examples of physical properties include melting, transition to a gas, change of strength, change of durability, changes to crystal form, textural change, shape, size, color, volume and density.
Key Concepts:
There are five signs of a chemical change:
1. Color Change
2. Production of an odor
3. Change of Temperature
4. Evolution of a gas (formation of bubbles)
5. Precipitate (formation of a solid)