Giant Molecules

CHEMISTRY SSS3 First Term

WEEK 9

Giant Molecules

Performance objectives

Students should be able to:

1. Explain what sugar is.
2. State the sources of sugar.
3. State the classification of sugar as monosaccharides and polysaccharides and also as reducing and non-reducing sugar with examples

Content

Sugar

Introduction:

Sugar is a carbohydrate that is soluble in water. Sugars are usually crystalline and have a sweet taste.

Chemicals that are sugars often have names ending in "-ose".
For example, note the suffix "-ose" in fructose, glucose, galactose, sucrose, lactose, and maltose.

The word-ending "-saccharide" does not necessarily indicate that the chemical or group or category of chemicals is a sugar.

Sugar' refers to sucrose, a carbohydrate found naturally in most…