Please answer all questions.

1			PET is the acronym for a diagnostic tool, which utilizes X-rays to scan internal body structures.
			A)	True
			B)	False
2			Matter is anything that has weight and has a function.
			A)	True
			B)	False
3			Although there are around 116 elements known, about 24 are not naturally occurring.
			A)	True
			B)	False
4			Gamma radiation is similar to X-rays but gamma rays are more penetrating.
			A)	True
			B)	False
5			The time it takes for a radioactive element to lose one-half of its radioactivity is the half-life.
			A)	True
			B)	False
6			Thallium-201 is usually used to detect cancers and inflammation.
			A)	True
			B)	False
7			Radioactive elements will undergo the same types of chemical reactions as their stable counterparts.
			A)	True
			B)	False
8			People are constantly exposed to what is termed background radiation in the environment.
			A)	True
			B)	False
9			Exposure to radiation from medical and dental procedures is less than what one would receive from natural background exposure.
			A)	True
			B)	False
10			Some smoke detectors can emit radiation.
			A)	True
			B)	False
11			Most chemical reactions are reversible in nature.
			A)	True
			B)	False
12			A person could have a blood pH of 7.2 and considered to have excess acidity or acidosis.
			A)	True
			B)	False
13			The total pH range compatible with human life is 7.35 to 7.45 in the blood.
			A)	True
			B)	False
14			A person could not survive with a blood pH of 6 or 8.2.
			A)	True
			B)	False
15			Cow's milk is more acidic than apple juice.
			A)	True
			B)	False
16			The presence of electrolytes in the body is more important than their relative amounts.
			A)	True
			B)	False
17			Organic compounds must all contain the atom carbon.
			A)	True
			B)	False
18			The fundamental unit of polysaccharides is glucose.
			A)	True
			B)	False
19			Saturated fats are associated with coronary artery disease.
			A)	True
			B)	False
20			All proteins function as catalysts or enzymes.
			A)	True
			B)	False
21			All proteins must contain nitrogen and amino acids.
			A)	True
			B)	False
22			Protons all bear positive charges while neutrons have no net charge.
			A)	True
			B)	False
23			Atoms such as sodium that are in the first column of the periodic table have positive charges.
			A)	True
			B)	False
24			Elements that are radioactive isotopes react in similar chemical ways to their relatively stable counterparts, such as 12C and 14C.
			A)	True
			B)	False
25			When sodium reacts with chlorine usually a covalent bond is formed.
			A)	True
			B)	False
26			Considering all molecules known, inorganic molecules usually contain fewer atoms than organic molecules.
			A)	True
			B)	False
27			Technically speaking, HCl is a correct formula for a strong acid.
			A)	True
			B)	False