Iodine Test - Monitoring Lesson

If you drop iodine solution on bread, it changes to Black. What does this show?

• Bread contains protein

• Bread contains sugar

• Bread contains starch

• Bread contains lipids?

Tags

NGSS.MS-PS1-2

When Starch is present Iodine Solution turns...

• Clear

• Cloudy/White

• Black

• Orange

What tests for starch?

• Benedict's Solution

• Iodine Solution

• Iodine

• Ethanol

A negative test for starch will cause Iodine to stay...

• orange/red

• blue

• black

• brick red

Tags

NGSS.MS-PS1-2

Which biomolecule turns iodine solution black?

• complex carbohydrate (polysaccharide)
• protein
• simple carbohydrate (monosaccharide)
• lipid

Which reagent is used to test for complex carbohydrates (polysaccharides)?

• iodine solution
• biuret solution
• Benedict's solution
• Sudan III solution

Cecilia used iodine to test a substance for starch. The color of the iodine placed on the substance was orange. What was the result of Cecilia's test?

• The substance tested positive for starch.

• The substance tested negative for starch.

Simple carbohydrates are also known as

• starch

• sugar

• protein

• fat

When starch is broken down it is converted to...

• Proteins

• fats

• carbohydrates

• vitamins