I am writing to let you know that your book, Eleven, has truly impacted me and my family positively. The book has rekindle our spirit to forge ahead. The book provides us with a reflection of our past experiences and understanding of crucial past events and how it has impacted our journey. Thank you for writing such a beautiful and impacting book.

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.

the answer is c i believe