Answer:
full moon
Explanation:
....ur welcome..............
Answer:
40%
Explanation:
Calculate the percent of the mass that is carbon:
Answer;
(3) Substance A is an element and substance Z is a compound.
Explanation;
-A compound is a substance formed when two or more chemical elements are chemically bonded together, such as water, carbon dioxide, methane, etc while an element is a pure chemical substance made of same type of atoms, such includes, oxygen, potassium, hydrogen, carbon, etc.
- Compounds can be broken
down or decomposed into simpler substances: elements cannot be broken down chemically into simpler substances .
Answer:
Exothermic
Explanation:
I think it is exothermic because heat is being released
