Multiple Choice
When a researcher has very little material (< 1 grams) to work with in identifying a substance, the most effective method to use to identify the substance is:
A) presumptive testing
B) liquid-liquid solution
C) chromatography
D) none of the above
Correct Answer:

Verified
Correct Answer:
Verified
Q10: Polar substances that have actual, identifiable positive
Q11: Electrophoresis is used to resolve problems in
Q12: Gasoline and water dissolve readily in each
Q13: The p in pH stands for the
Q14: Mass action refers to heavier molecules traveling
Q15: Chemicals only have either negative or positive
Q16: The two phases of chromatography are<br>A) liquid,
Q17: The process used to describe the travel
Q18: Gasoline contains over _ separate substances.<br>A) 100<br>B)
Q20: The pH of pure water is 12.