Answer:
Melting butter
Explanation:
You can reverse the change of butter back to its original state but you can never reverse the rest back to there original state
The answer is D. Heterogeneous mixture
Weathering and chemical substance weathering
Answer:
True
Explanation:
The arrhenius theory describes an acid as a substance that produces excess hydrogen ions when it interacts with water. Therefore, they increase the concentration of hydrogen ions in solutions.
An arrhenius base interacts with water to yield excess hydroxide ions in aqeous solutions.
Answer:
a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
