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Chemical Safety Flashcards

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

Read the first 7 Chemical Safety flashcards as text

  1. Which section of a Safety Data Sheet (SDS) contains first-aid measures?

    Answer: Section 4

    Section 4 of the GHS-aligned SDS provides first-aid measures for inhalation, skin contact, eye contact, and ingestion.

  2. What does the term 'permissible exposure limit' (PEL) refer to?

    Answer: Maximum airborne concentration of a substance a worker can be exposed to over a work shift

    OSHA's PEL is the maximum concentration of an airborne chemical to which most workers can be exposed over an 8-hour workday without adverse health effects.

  3. Which PPE is required when handling chemicals that can cause severe skin burns?

    Answer: Chemical-resistant gloves and protective apron

    Chemicals that cause burns require chemical-resistant gloves and a protective apron to prevent skin contact and serious injury.

  4. An 'incompatible chemicals' scenario occurs when:

    Answer: Two chemicals react dangerously when combined

    Incompatible chemicals are substances that, when mixed or stored together, can cause dangerous reactions such as fire, explosion, or toxic gas release.

  5. What is the purpose of an eyewash station in a chemical work area?

    Answer: To flush chemical splashes from the eyes with water for at least 15 minutes

    ANSI standards require eyewash stations that deliver a continuous flow of water to flush chemical splashes from the eyes for a minimum of 15 minutes.

  6. Which GHS pictogram represents an acute toxicity hazard (fatal or toxic if ingested, inhaled, or absorbed through skin)?

    Answer: Skull and crossbones

    The skull and crossbones GHS pictogram signifies acute toxicity at categories 1–3, indicating the chemical can be fatal or toxic through various exposure routes.

  7. Before entering a confined space where chemical vapors may be present, workers must:

    Answer: Test the atmosphere for oxygen, flammable gases, and toxic vapors

    OSHA's permit-required confined space standard mandates atmospheric testing for oxygen levels, flammable gases, and toxic contaminants before entry.