Understanding the Impact of Toothpaste on Taste

Understanding the Impact of Toothpaste on Taste

Assessment

Interactive Video

Science, Chemistry, Biology

7th - 12th Grade

Practice Problem

Hard

Created by

Jackson Turner

FREE Resource

The video explains why orange juice tastes bad after brushing teeth. It's not the mint in toothpaste but a compound called sodium lauryl sulfate, a surfactant, that affects taste. Surfactants block sweet receptors and enhance bitter ones, making orange juice taste sour. To avoid this, use toothpaste without sodium lauryl sulfate or drink orange juice later.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a common experience when drinking orange juice after brushing your teeth?

It has no taste at all.

It tastes sweeter than usual.

It tastes bitter and unpleasant.

It tastes salty.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which compound in toothpaste is primarily responsible for altering taste?

Mint flavoring

Sodium lauryl sulfate

Fluoride

Calcium carbonate

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main function of surfactants in toothpaste?

To whiten teeth

To strengthen enamel

To add flavor

To act as a detergent and foaming agent

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do surfactants affect sweet taste receptors?

They block the sweetness

They make sweetness taste sour

They have no effect

They enhance the sweetness

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to bitterness receptors when surfactants are present?

They are enhanced

They are blocked

They are unaffected

They are destroyed

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are phospholipids and how are they affected by surfactants?

They are proteins that enhance sweetness

They are fats that block bitterness

They are acids that increase sourness

They are sugars that enhance bitterness

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of phospholipids in taste perception?

They enhance salty taste

They block bitter taste

They enhance sweet taste

They block sour taste

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