Give one word/a few words for:
Any one chemical change.
A chemical change is a permanent change in which new substances are formed from the substances taken.
Example of chemical change: Burning of paper is a chemical change.
Give one word/a a few words for each of the following.
Any four elements
Give one word/a few words for each of the following.
Any four noble gases
The substance with fixed chemical and physical properties.
Dry ice.
Elements of ammonia