Question 4
Copper sulfide is formed from copper and sulfur. Which of the following best describes copper sulfide?
a. It is a heterogeneous
mixture.
P
X b. Because copper and sulfur keep their properties, you can use those properties to separate the copper
sulfide into its parts
c. Copper sulfide is a compound with properties that are different from the elements copper and sulfur.
d. The copper and sulfur are so evenly mixed that you cannot see the different parts.