7.) 3
8.) i think it's 2
9.) 3
Answer: Mg3(PO4)2.
Explanation: remember phosphate nd phosphite are 2 different things.
phosphate= po4
phosphite= po3
Explanation:
If a sample is impure, it means it contains multiple substances, this means that when you test it in a flame test, it will come up with a mixed color meaning you wont be able to tell what ions are in the substance.
Answer:
you can classify a mineral by its appearance and other properties. The presence of a mineral is defined by the color and luster, and the color of the powdered mineral is described by the band. Every mineral has a distinctive density. To compare the hardness of rocks, the Mohs Hardness Scale is used.
Explanation:
Catalyst can speed up chemical reaction without being used up or involved in thr reaction..