At a pressure 41 kpa, the gas in a cylinder has a volume of 18 liters. assuming temperature remains the same, if the volume of the gas is decreased to 10 liters, what is the new pressure

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 correct answer is:

a. formation of precipitation

your answer is c) plasma

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