2 Points How is a hypothesis different from a guess?
A. It is different because the person making the hypothesis has done research on the topic first.
B. It is different because an experiment has provided evidence to support the guess.
C. It is not different, a hypothesis is only a guess.
D. It is different because it is a scientist making the guess.
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C.

Explanation:

They are pretty much the same because they are both attempts to figure out the result of something without actually verifying if it is correct, and no research done.

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explanation:

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.