What is data that is not directly collected or observed by the scientist called? . a. research data b. adjunct data c. secondary data d. derivative data

c

Explanation:

C. Secondary data

Explanation:

It means that the data that was collected by someone else that is not the scientist, it may include censuses, surveys, data bases or other sort of information. Such data could be collected by different private companies, from organizational records to government departments, as they often collect data for other research purposes and the information is available to be used for other scientific purposes.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

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