Question

Select all the correct answers. a scientist carried out several different procedures, each of which caused a change in matter. select each procedure that is likely a chemical change. salt crystals were crushed into a fine powder. bubbles were produced when iron was placed in acid. two liquids were combined, and a solid appeared. a piece of metal melted when it was heated. a white substance turned blue when water was added.

Answer 1

Answer:

-bubbles produced when iron placed in acid -two liquids combined and a solid appeared -white substance turned blue when water was added

Explanation:

all the other answers could be turned back into their previous state, or haven't really changed.