a scale-model mound made of the same materials that make the real hill
B boiling point https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Map%3A_Introductory_Chemistry_(Tro)/03%3A_Matter_and_Energy/3.05%3A_Differences_in_Matter%3A_Physical_and_Chemical_Properties#Summary
Answer:
C
Explanation:
The answer is C because only that amount can move
The answer is B the flow of electrons through a substance
The answer is caso4 and ca(C2H3O2)2
