Chemistry in Cosmetology

Which of the following is an example of a chemical reaction commonly used in cosmetology?

• Mixing shampoo and conditioner

• Hair coloring

• Brushing hair

• Cutting hair

What is the primary purpose of using a Material Safety Data Sheet (MSDS) in a salon?

• To provide styling tips

• To list the prices of services

• To inform about chemical safety and handling

• To schedule appointments

Which term describes a substance that speeds up a chemical reaction without being consumed?

• Solvent

• Catalyst

• Reactant

• Product

What does the pH scale measure?

• Temperature

• Acidity/Alkalinity

• Volume

• Weight

Which of the following is a safety precaution when handling chemicals in a salon?

• Mixing chemicals in a closed container

• Wearing protective gloves

• Using chemicals in a poorly ventilated area

• Ignoring the expiration date of products

What is the chemical term for a substance that dissolves another substance?

• Solvent

• Solute

• Solution

• Emulsion

Which of the following must be included on the label of a chemical product used in cosmetology?

• The name of the stylist

• The chemical composition

• The price of the product

• The salon's address

Which of the following is a common chemical used in hair relaxers?

• Sodium hydroxide

• Acetic acid

• Sodium chloride

• Ethanol

What does the term "oxidation" refer to in hair coloring?

• Loss of electrons

• Gain of electrons

• Mixing of colors

• Application of heat

Which of the following is a correct safety practice when storing chemical products in a salon?

• Storing chemicals in unmarked containers

• Keeping chemicals in a cool, dry place

• Mixing old and new chemicals together

• Leaving chemicals in direct sunlight