What is an important fact about the sun that impacts our weather? Name
another factor other than the sun that helps to create weather. Does water vapor
absorb the sun's energy faster than the land? What determines if rain, sleet, hail
or snow fall from a cloud? *

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.

b.final