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Scientific Concepts Flashcards

7 cards from real Cosmetology Test practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Scientific Concepts flashcards as text

  1. Which type of chemical bond is broken when hair is permanently waved?

    Answer: Disulfide bonds

    Permanent waving breaks disulfide bonds using a reducing agent, then reforms them in a new shape with a neutralizer.

  2. What is the pH range considered neutral on the pH scale?

    Answer: 7

    A pH of 7 is neutral; values below 7 are acidic and values above 7 are alkaline.

  3. Which layer of the hair is responsible for its strength and elasticity?

    Answer: Cortex

    The cortex contains the fibrous proteins and disulfide bonds that give hair its strength and elasticity.

  4. What type of reaction occurs when an oxidizing agent is applied to hair during color processing?

    Answer: Oxidation

    Oxidation involves the loss of electrons or addition of oxygen, which activates hair color developers and neutralizers.

  5. Sebum is produced by which gland in the skin?

    Answer: Sebaceous gland

    Sebaceous glands produce sebum, the natural oil that lubricates and waterproofs the skin and hair.

  6. What is the term for the process by which cells divide and reproduce?

    Answer: Mitosis

    Mitosis is the process of cell division that produces two identical daughter cells for growth and repair.

  7. Which element is the primary component of all organic chemical compounds found in cosmetics?

    Answer: Carbon

    Carbon is the backbone element of all organic compounds, including the proteins, oils, and polymers used in cosmetology products.