chemical, specifically an "oxidation" reaction (even though oxygen is not involved).
It is a chemical change.
this is a chemical change.
calcium sulfide :))
Magnesium sulfide (MgS) is obtained.
It's a chemical change. The silver reacts with sulfur compounds from the air.
It is a chemical change.
When something reacts, that is a chemical reaction. Chemical change.
Chemical change happens when there is an acid formation as the substances and chemicals reacts to form new substances.
chemical change
PICKLES !
this is a chemical change.
Physical
It's physical
Strontium reacts with water producing strontium hydroxide and hydrogen gas. This is a chemical change.
chemical change
chem
chemical