Q: What 'counting' instrument is used to measure radioactivity? Choices: - Liquid Counter - ellie counter - pryor counter - geiger counter A:
geiger counter

Q: When carbon atoms are not bonded to as many hydrogen atoms as possible, what kind of hydrocarbon results? Choices: - unstable - aqueous - saturated - unsaturated A:
unsaturated

Q: Q: What is the process where light bounces back from surfaces that it cannot pass through? Choices: - diffraction - direction - absorbtion - reflection A:
A: reflection

Question: Q: What are the "chemical messenger" molecules used by the endocrine system? Choices: - acids - axons - enzymes - hormones A:
Answer: hormones

*Question*
Q: What do you call a type of mixture that has the same composition throughout? Choices: - transition - structure - transfusion - solution A:
**Answer**
solution

(Question)
Q: Radiocarbon is useful for dating relatively young materials with what element as their base? Choices: - hydrogen - oxygen - nitrogen - carbon A:
(Answer)
carbon