What is the connection between prescription opioids and illegal substances like heroin?

Question 2 What is the difference between a steroid and water soluble hormone?

Question 14   a) Radioactive decay produces ionising radiation. Like all ionising radiation this can lead to harmful effects on living tissue due to cell damage including damage to DNA, mutation and cell death.  Contrast the differing health risks associated when working with alpha, beta or gamma radiation sources.  b) Describe some ways in which those working with radioactive sources and people in general can be protected against the risks of radiation exposure from such sources.

Welcome to the Chemistry Forensics Agency. At the CFA, we use our chemistry expertise and understanding to help solve problems of a potentially criminal nature. Bucks McGee, after being poisoned, is currently being treated in the hospital with an antidote- the chemical Fe7(CN)18. The compound is so intensely coloured that even a small amount of it makes for a black or dark blue suspension. Given that this antidote has never been administered at the hospital, none of the doctors or nurses have experience with it. There is one very old bottle of Fe7(CN)18 pills in the medicine storeroom, but the label is worn, and the units are in the old, archaic British Apothecaries' system which has unusual units like drachms, scruples, grains, and mites: 453.6 grams (g) = 1 pound (lb) = 12 ounces (3) = 96 drachms (3) = 288 scruples (3) = 5760 grains (gr) = 115200 mites (m) It would take days (at least!) for a new bottle of the antidote to be ordered and received, and Bucks McGee probably doesn't have…