Understanding Toothpaste Composition

The video explores the history and composition of toothpaste, highlighting its key ingredients such as abrasives, humectants, sweeteners, foaming agents, and thickeners. It explains the role of each component in dental care and concludes with a DIY experiment to create toothpaste using natural ingredients.

What is one of the main differences between ancient and modern toothpaste?

• Ancient toothpaste was sweeter.

• Ancient toothpaste used more natural ingredients.

• Modern toothpaste is made without abrasives.

• Modern toothpaste is less effective.

What is the primary function of abrasives in toothpaste?

• To clean teeth by scraping off plaque

• To add flavor

• To preserve the toothpaste

• To make toothpaste foam

Why are humectants added to toothpaste?

• To change its color

• To increase its abrasiveness

• To help retain moisture

• To make it taste sweet

Which of the following is a common sweetener used in toothpaste?

• Sugar

• Pepper

• Salt

• Saccharin

What is the role of foaming agents in toothpaste?

• To make the toothpaste taste better

• To help trap and remove debris

• To increase the toothpaste's shelf life

• To make the toothpaste more colorful

What is the purpose of thickeners in toothpaste?

• To increase the abrasiveness

• To add a sweet taste

• To enhance the color

• To prevent the toothpaste from being too runny

Which ingredient is used to make toothpaste white?

• Sodium fluoride

• Calcium carbonate

• Sodium hydroxide

• Titanium dioxide

What natural abrasive did the narrator use in their homemade toothpaste?

• Hydrated silica

• Calcium carbonate

• Sodium bicarbonate

• Aluminum oxide

Why did the narrator choose not to include sodium fluoride in their homemade toothpaste?

• It made the toothpaste taste bad

• They were not planning to use it long-term

• They didn't have any available

• It was too expensive

What was the narrator's overall rating of their homemade toothpaste?

• 5 out of 10

• 8 out of 10

• 6 out of 10

• 7 out of 10