2020 F5 SC C4: Soap,polymer&monomer,rubber

what are the materials needed to make soap? (more than 1 answer)

• palm oil

• salt

• fatty acid

• glycerol

• sodium hydroxide

the head of soap molecule is _______.

• hydrophobic

• hydrophilic

the tail of soap molecule dissolves in ______.

• grease

• water

soap molecules ________ surface tension of water.

• increase

• decrease

_______ are small molecules that will combine together.

• monomer

• polymer

the process of joining monomers to form polymer is called _______.

• polymerization

• depolymerization

which one is used to make airplane window panes?

• PVC

• SBR

• Neoprene

• Perspex

• Ethene

Which one is used to make plastic bottles?

• Styrene

• Polyethene

• Vinyl chloride

• Neoprene

• Chloroprene

natural rubber is made up of ______ monomer.

• styrene

• isoprene

• ethene

latex will coagulate if it contains ______ ion.

• positive

• negative