Put simply, a covalent bond is a chemical bond between two atoms where electron pairs are shared.
I believe your answer is B.
Answer:
A precipitate forms; the colour changes.
Step-by-step explanation:
The formation of a precipitate a colour change are always signs that a chemical reaction has occurred.
A, B, C, and D are <em>wrong.</em> They are signs of a reaction, but you did not observe them here.
Answer:
I think b A mixture of two atoms.
Explanation:
I am not sure though
<span>Following is the match the mineral categories to their best descriptions:
a) </span>sulfide mineral: <span>Contain sulfur plus a metallic element
b) </span>sulfate mineral: <span>Compounds that have a sulfur atom surrounded by four oxygen atoms
c) </span>halide minerals: Contain elements like fluorine, bromine, iodine, or chlorine combined with metals. S<span>table salt is an example of this type of mineral
</span>d) carbonate mineral: Compounds made up of a carbon atom that is bordered by three oxygen atoms.
