Any substance that is not a mixture is a pure substance. When colored watercolors are applied to paper, sometimes the colors in the ink separate. This technique is called chromatography
What part of it are you confused about
Answer:
Last Quarter also called Third Quarter.
Explanation:
The part of the atom that is involved in chemical changes is A. electron. The electrons that are in the most outer shells are called valence electrons which are easily removed or shared to form bonds. Valence electrons are related to the number of valence electrons
IT will be easy to know how chemical reactions occur
It will helps to know the fundamental particles of an atom