Embalming Chemistry Exam
Questions and Answers 100% Pass
What is a preservative? - ✔✔a naturally occurring or synthetically produced substances
that is added to products such as foods, pharmaceuticals, paints, biological samples,
wood and human or biological specimens to prevent decomposition by microbial
growth or by undesirable chemical changes such as autolysis of the body by its own
enzymes.
What are some preservatives referred to as? - ✔✔Fixatives
What are fixatives? - ✔✔what some preservatives are referred to as and is especially
true of formaldehyde and glutaraldehyde. The use of these chemicals "fix" the tissues in
place.
What do preservatives do? - ✔✔Inactivate the chemical groups of proteins and amino
acids, inhibits further decomposition, Inactivates enzymes, kills microorganisms, and
destroys and stops production of odors.
What is the reaction of formaldehyde with water? - ✔✔It exists as methylene glycol and
is not a stable compound.
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 1
, What is the reaction of formaldehyde with methanol? - ✔✔It prevents the
polymerization of formaldehyde to para-formaldehyde ( coagulated formaldehyde)
What is the reaction of formaldehyde with amino acids? - ✔✔It preserves without
coagulation, amino acid strand is not long enough to coagulate. (must have an amino
chain with a peptide bond).
What is the reaction of formaldehyde with proteins? - ✔✔Preserves and coagulates, it is
denatured breaking up 3 dimensional structure, loses its ability to imbibe (hold water)
What is the first step in the partial oxidation series for methane (CH4)? - ✔✔Changes to
an alcohol - methyl alcohol (CH3OH)
3 hydrogens attached to a carbon
What is the second step in the partial oxidation series for methane (CH4)? - ✔✔Changes
to an aldehyde HCHO
2 hydrogens attached to a carbon
What is the third step in the partial oxidation series for methane (CH4)? - ✔✔Changes
to formic acid (HCOOH)
1 hydrogen attached to a carbon
What is the fourth step in the partial oxidation series for methane (CH4)? - ✔✔CO2 +
H2O + Energy
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 2
Questions and Answers 100% Pass
What is a preservative? - ✔✔a naturally occurring or synthetically produced substances
that is added to products such as foods, pharmaceuticals, paints, biological samples,
wood and human or biological specimens to prevent decomposition by microbial
growth or by undesirable chemical changes such as autolysis of the body by its own
enzymes.
What are some preservatives referred to as? - ✔✔Fixatives
What are fixatives? - ✔✔what some preservatives are referred to as and is especially
true of formaldehyde and glutaraldehyde. The use of these chemicals "fix" the tissues in
place.
What do preservatives do? - ✔✔Inactivate the chemical groups of proteins and amino
acids, inhibits further decomposition, Inactivates enzymes, kills microorganisms, and
destroys and stops production of odors.
What is the reaction of formaldehyde with water? - ✔✔It exists as methylene glycol and
is not a stable compound.
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 1
, What is the reaction of formaldehyde with methanol? - ✔✔It prevents the
polymerization of formaldehyde to para-formaldehyde ( coagulated formaldehyde)
What is the reaction of formaldehyde with amino acids? - ✔✔It preserves without
coagulation, amino acid strand is not long enough to coagulate. (must have an amino
chain with a peptide bond).
What is the reaction of formaldehyde with proteins? - ✔✔Preserves and coagulates, it is
denatured breaking up 3 dimensional structure, loses its ability to imbibe (hold water)
What is the first step in the partial oxidation series for methane (CH4)? - ✔✔Changes to
an alcohol - methyl alcohol (CH3OH)
3 hydrogens attached to a carbon
What is the second step in the partial oxidation series for methane (CH4)? - ✔✔Changes
to an aldehyde HCHO
2 hydrogens attached to a carbon
What is the third step in the partial oxidation series for methane (CH4)? - ✔✔Changes
to formic acid (HCOOH)
1 hydrogen attached to a carbon
What is the fourth step in the partial oxidation series for methane (CH4)? - ✔✔CO2 +
H2O + Energy
100% Pass Guarantee Sophia Bennett, All Rights Reserved © 2025 2
