Saturated and Unsaturated

Part of the Food Chemistry and the Lab section of Coddy's Chemistry journey. Lesson 6 of 27.

Saturated: only single C-C bonds. Unsaturated: at least one C=C double bond.

But-2-enoic acid: a short chain with one carbon-carbon double bond and a carboxyl group

One C=C double bond makes a chain unsaturated

A double bond bends the chain, so the molecules pack loosely: unsaturated fats are oils (liquid), saturated fats are solid.

Bromine water turns from orange to colorless with a C=C double bond.

Challenge

But-2-enoic acid is a short unsaturated acid. Its atoms are placed on the board: give every bond its order so that each atom has its usual number of bonds.

Try it yourself

Work it out on the board

Test yourself

This lesson includes a short quiz. Start the lesson to answer it and track your progress.

All lessons in Food Chemistry and the Lab

1Carbohydrates

Sugars Glucose and Fructose Starch and Cellulose Recap - Sugar Detective

4Food Energy and Additives

Energy in Food Vitamins Preservatives and pH Recap - Food Label

7Practice Problems

Recap - Fat in Chips Recap - Vitamin C Titration

2Fats and Oils

Fatty AcidsSaturated and UnsaturatedTriglycerides and Esters Recap - Oil or Fat

5Laboratory Skills

Lab Safety Measuring Mass and Volume Making a Solution Separating Mixtures Recap - Lab Notebook

3Proteins

Amino Acids Peptide Bonds Denaturing Proteins Recap - Protein Builder

6Experiments

Titration in the Lab Tests for Ions Rates in the Lab Recap - Mystery Powder