I just took a test with this question and got the answer wrong for saying ethane. The correct answer is propane.
FeO + Al -> AlO + Fe
As you can see, this type of reaction would lead to be a Single Placement (or Replacement) reaction!
Hope this helps! Best wishes!
Answer: the last choice, It separates dissolved substances, which is a physical change.
Explanation:
Physical changes do not modify the composition of the substances.
The substances that undergo a physical change do not brake or form chemical bonds, they just modify ther appearance: the size, the physical state (solid, liquid, or solid), the density, the shape, that kind of properties.
The salts dissolved and the water will have the same chemical properties in solution and after being separated, so they have not had a chemical change, they have only changed their appearance, so this explains why it is a physical change.
Answer: (B)
Explanation: Decreases the number of bases in the sequence.
Explanation:
K3P = Potassium phosphide