CCS CCS Cremation Chemistry and Science

Question 1

What is the primary chemical process that occurs during cremation of human remains?

Accepted Answer

Oxidation (combustion)

Answer

Cremation is fundamentally an oxidation process in which organic compounds in soft tissue and bone react with oxygen at high temperatures.

Question 2

What is the main mineral component of cremated remains (cremains)?

Accepted Answer

Calcium phosphate / hydroxyapatite [Ca₁₀(PO₄)₆(OH)₂]

Answer

Hydroxyapatite, a calcium phosphate mineral, is the primary structural mineral of bone and is what remains after cremation.

Question 3

Why do cremated remains appear white or grayish-white in color?

Accepted Answer

Because calcium oxide and calcium phosphate are naturally white compounds

Answer

The white or gray color of cremains results from the calcium oxide and calcium phosphate compounds that make up calcined bone.

Question 4

What gases are primarily released during the combustion of soft tissue in cremation?

Accepted Answer

Carbon dioxide and water vapor

Answer

Combustion of organic tissue primarily produces carbon dioxide (CO₂) and water vapor (H₂O) as the main byproducts.

Question 5

What is the typical weight range of cremated remains from an average adult?

Accepted Answer

3–9 pounds (1.4–4.1 kg)

Answer

Adult cremated remains typically weigh between 3 and 9 pounds (approximately 1.4–4.1 kg), depending on body size and bone density.

CCS - Certified Cremation Specialist Practice Test