Soap

Soap was discovered by who?

• Americans

• Mr. Boadu

• Babylonians

Soap was first used to …

• Clean utensils and as medicine

• Wash cars

• clean clothes

How long should you wash your hands before rinsing with water?

• 5 minutes

• 1 minute

• 20 seconds

Myra is curious about what goes into making soap. Can you help her understand?

• Vinegar and salt

• Water and sugar

• Baking soda and corn syrup

• Fats or oils, alkali (sodium or potassium hydroxide), fatty acids, and glycerin.

Akhil is trying to understand how soap works. What role do hydrophilic and hydrophobic parts play in soap structure?

• Hydrophilic parts attract water and hydrophobic parts attract oils, allowing soap to clean by emulsifying dirt.

• Hydrophilic parts repel oils and hydrophobic parts repel water, making soap ineffective.

• Hydrophilic parts are responsible for the scent of soap, while hydrophobic parts provide color.

• Both parts of soap are hydrophobic, which prevents cleaning.

In a chemistry class, Kiara is learning about micelle formation in water. Can you explain how this process works?

• Micelles are formed by hydrophobic molecules clustering together in water.

• Micelles dissolve completely in water without any structure.

• Micelles form when amphiphilic molecules aggregate in water, with hydrophilic heads facing outward and hydrophobic tails inward.

• Micelles are created when water molecules surround non-polar substances.

Sanya is concerned about the environmental impact of using synthetic soaps in her household. What should she know?

• Synthetic soaps can harm aquatic ecosystems and contribute to pollution.

• Synthetic soaps have no impact on the environment or ecosystems.

• Using synthetic soaps improves water quality and supports aquatic life.

• Synthetic soaps are completely biodegradable and safe for the environment.

Tags

NGSS.MS-ESS3-3

Nikita is trying to clean her favorite shirt that has some grease stains on it. She remembers that micelles can help in cleaning. Can you explain how micelles can trap dirt and grease?

• Micelles trap dirt and grease by encapsulating them in their hydrophobic core, allowing them to be washed away with water.

• Micelles break down dirt and grease into smaller particles that remain suspended in water.

• Micelles repel dirt and grease, preventing them from sticking to surfaces.

• Micelles dissolve dirt and grease in water without trapping them.

What is the primary chemical reaction involved in soap making?

• Saponification

• Hydrolysis

• Oxidation

• Polymerization

Tags

NGSS.MS-PS1-5

Which of the following is a common ingredient in soap that acts as an emulsifier?

• Glycerin

• Sodium chloride

• Citric acid

• Sodium hydroxide