why is this a chemical change Marshmallow is mainly made of sugar. When the outside of it burned, the sugar combined with the oxygen in the air and was turned into carbon dioxide gas, water vapor, and solid carbon ash.

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.

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

answer carbon and three oxygen atoms;