Which of the following is the best way for students to prepare before using chemicals in the laboratory?

• A. Read the Safety Data Sheets (SDS) for each chemical and review proper handling procedures.
• B. Assume all chemicals are safe if they are commonly used in the lab.
• C. Begin working with chemicals immediately without reviewing any safety information.
• D. Rely on classmates for instructions about chemical safety.

Answer: (A)

Verified step by step guidance

1. Understand the importance of safety in the chemistry laboratory, especially when handling chemicals that may have hazardous properties.
2. Recognize that Safety Data Sheets (SDS) provide detailed information about each chemical, including hazards, handling procedures, and emergency measures.
3. Identify that reading the SDS before using any chemical ensures you are informed about potential risks and the correct safety protocols to follow.
4. Avoid assumptions about chemical safety based on familiarity or common use, as even common chemicals can pose risks if mishandled.
5. Conclude that the best preparation is to read the SDS and review proper handling procedures rather than relying on others or skipping safety information.