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E.4 Describe the atomic composition of molecules VFR
How many bromine atoms are there in 4 molecules of CH2Br?

How many bromine atoms are there in 4 molecules of CH2Br?

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.

answer; capital earns interest; entrepreneurship receives a profit or incurs a loss;

answeridentity;