Answer: I think the answer is A
Explanation:
I’m sorry if I’m wrong.
A pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not mix evenly, but instead form two separate layers.
Try googleing it that is how i got some of mine
<span>chemical changes occur using water either adding water molecules to break other</span>
Answer:
a) hydrogen gas and a salt
b)sodium sulphate,water and carbon dioxide.
c)barium hydroxide and hydrogen gas.
d)magnesium nitrate and water.
