Exhibit 31-1 MATCH a Term or Structure from the List Below to Below

question 6

Multiple Choice

Exhibit 31-1
MATCH a term or structure from the list below to each of the following definitions or names. Place the letter of the term or structure in the blank to the left of the definition or name which it describes.

-____ a polyurethane

• A)BF₃ + H₂O
• B)elastomer
• C)chain-growth polymer
• D)AL(CH₂CH₃)₃ + TiCl₄
• G)thermoplastic
• H)homopolymer
• I)plasticizers
• J)thermosetting resins
• K)copolymers
• L)step-growth polymer
• M)Grubb's catalyst
• N)metallacycle

---

Definitions:

Urine Color

The hue or shade of urine, which can vary based on hydration levels, the presence of certain substances, or health conditions.

Specific Gravity

The ratio of the density of a substance to the density of a reference substance, typically water.

Substances Dissolved

Materials that have become integrated into a liquid phase, turning into a solution without retaining their original state.

Renal Failure

A medical condition in which the kidneys lose the ability to filter waste and excess fluids from the blood.