9. How much power is flowing into your house if the voltage is 120 V and the current is 50 A? Use the formula P = VI. O A. 1200 Watts
O B. 240 Watts
O C. 6000 Watts
O D. 4800 Watts

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.

i think it's letter a.