Chapter 7 - How to Conduct Pretesting. The systematic checking or pretesting of a questionnaire is central to planning a good survey. As mentioned earlier in this series, the survey sponsors should play a major role in developing the data-collection instruments being proposed-including any testing being done.
Question and answer. The simplest unsaturated hydrocarbon is methane, a one-carbon molecule. Please select the best answer from the choices provided T F. The simplest unsaturated hydrocarbon is methane, a one-carbon molecule.This is false. mixture is different from a compound because each substance in a mixture a. retains its own properties. c. forms an ion. b. changes its electric charge. d. changes from a solid to a liquid.
We'll begin with the compounds of carbon and hydrogen. Compounds containing only carbon and hydrogen are called hydrocarbons. The simplest hydrocarbon contains one carbon atom and four hydrogen atoms. The formula is CH4, and the name is methane. If we continue adding carbon atoms and hydrogen atoms the formulas and names for the first ten hydrocarbons are;