Think about the questions below. You will be reporting the answers in your summary. Write your summary in the essay box below. What kind of energy transformation is occurring?
How much water was melted by the incandescent light bulb? By the CFL?
How do you explain the difference in the amount of water?
Which light bulb do you think is more energy efficient?
Research incandescent bulbs and CFLs. Write a 150 word summary describing how each bulb works and include the answers to the questions above.

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.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock

the objects have the same charge.