Why was the International System of Units (SI) developed? A. It was developed to compete with the English Standard System of Units.
B. It was developed to allow countries to follow their own systems of measurement.
C. It was developed to help scientists keep their data, observations, and measurements secret from other scientists.
D. It was developed to help scientists compare measurements made by different people in different locations using different tools.
PLEASE NO FAKES!

C. makes the most sense to me.

So sorry if this is not right. But Hope This Helps!

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.

so she was walking and she stepped on warm jeffy , uh uh uhh dadye i just pooped my pants