Explanation:
Determining a substance's physical or chemical identity. What are the two main requirements for identification? The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.
A heterogeneous mixture composes of non- uniform components, so the concrete would be the answer, because you can tell the components from one another.
Answer:
C.
The total mass of the particles in the system stays the same. sorry if i am wrong
Explanation:
I think the answer is a red color
Answer:
Classification of Living things
Explanation: