Chemistry 3

______ is a process by which triglycerides are reacted with sodium or potassium hydroxide to produce glycerol and a fatty acid salt, called soap.

• Hydrolysis

• Disassociation

• Saponification

• Esterification

Fats are _____ at room temperature

• Solids

• Liquids

• Gases

• Fluids

______ are substances which act with water to make things clean

• Glycerol

• Ethanol

• Detergent

• Alkanoates

_______ are giants molecules which are formed by joining together a large number of much smaller molecules thus, forming a long chain

• Monomer

• Polymers

• Carbons

• Oxygen

Chemical formular for starch is _____

• (C₅H₁₀O₅)n

• (C₆H₁₂O₅)n

• (C₆H₁₀O₅)n

• (C₆H₁₁O₅)n

Carbohydrates consists of _____ (a) C, H, N (b) C, H, O (c) C and H (d) C and O

• C, H, N

• C, H, O

• C and H

• C and O

Test for starch , add a few drops of iodine to some boiled starch, a ____ colouration which disappears on cooling results.

• Blue

• Bluish-green

• Dark-green

• Dark-blue

A ______ is derived or condensed from two molecules of single sugar by the elimination of one mocule of water.

• disaccharide

• Monosaccharide

• Polysaccharide

• Starch

Sucrose + water-----glucose + ________

• Glucose

• Galatose

• Fructose

• Maltose

Most metals exist in nature as

• Crusts

• Alloys

• Ores

• Feldspar