Agroup of scientists come across a rock that they can’t identify. they believe it’s made up of a certain type of mineral. explain how the techniques you used in your experiment can scientists identify the mineral that the rock contains.

this is urgent plz !

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. examine and describe cells

what are the statements