Why is it important to test sending an electronic résumé before sending it to an employer?

It is extremely important to test sending an electronic resume before sending it to an employer. This is because the test will allow you to see the resume as the employer will see it. This means that if there any mistakes in it (spelling, formatting, etc.) you will be able to see them before you send the final copy. Moreover, this will allow you to ensure that the resume is sent in the way you want it to be, and that it is legible for the employer.

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.