Question

question 5 (2.5 points)
tracers are used in what form of medical test?
pet scans
ct scans
sonograms
x - rays
mri
question 6 (2.5 points)
the positively charged ion, potassium, and the negatively charged ion, fluoride, will form what kind of bond?
ionic
polar covalent
nonpolar covalent
hydrogen
isotonic

Explanation:

• For Question 5: PET scans use radioactive tracers to create images of metabolic processes in the body. CT scans use X - rays and computer technology, sonograms use sound waves, X - rays use electromagnetic radiation, and MRI uses magnetic fields and radio waves, none of which rely on tracers in the same way as PET scans.
• For Question 6: An ionic bond is formed between a positively charged ion (cation) and a negatively charged ion (anion). Potassium is a cation and fluoride is an anion, so they form an ionic bond. Polar covalent bonds occur between atoms with different electronegativities sharing electrons, non - polar covalent bonds between atoms with similar electronegativities sharing electrons, hydrogen bonds are between a hydrogen atom and a highly electronegative atom in a different molecule, and isotonic refers to solutions with the same osmotic pressure, not a type of chemical bond.

Answer:

Question 5: A. PET scans
Question 6: A. ionic