23. _______________ is composed of two or more substances.

12. The atomic mass of an element is the number of __________ found in it.

20. An example of physical changes in funeral service is:

30. Electrons are found inside the atomic nucleus.

35. Paraformaldehyde is the polymerization of formaldehyde. It is a solid called paraform. What is it used for in the prep room?

2. The change in matter from a solid to a gaseous state is called (i.e. melting dry ice):

36. Chemistry is the study of matter and the origin of mass.

25. A positively charged particle in the nucleus of an atom is called:

31. Glycerol is a trihydroxy alcohol. This means it has _________ hydroxyl groups.

39. Also known as wetting agents, surface tension reducers that make chemical flow through smaller apertures. Name me.