Adding hot cocoa to hot water would be a chemical change
K + S = K2S
Potassium reacts with sulfur to produce potassium sulfide
the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.the branch of science that deals with the identification of the substances of which matter is composed; the investigation of their properties and the ways in which they interact, combine, and change; and the use of these processes to form new substances.
Hey There!
Here is your answer:
The answer is a compound machine!
Hope this helps!
