Which laboratory equipment or practice is CORRECTLY described by the student's answer? For incorrect answers, provide the CORRECT answer. Justify your reasoning.

a)

• (i) The student's answer is partially correct in intent but unclear. The rule (e.g., wearing safety goggles or a lab coat) is important to protect the user from chemical splashes or contact with corrosive or harmful substances, which could cause severe injury to the eyes or skin.
• (ii) The student's answer is correct.
  • Do not wear open shoes in the laboratory. (or wear closed-toe shoes)

b)

• (i) To measure accurately a volume of $0.6 \text{ cm}^3$, a burette or a pipette (specifically a micropipette or a small volume pipette) is used. A beaker is used for approximate volumes or holding liquids. The student's answer "beaker" is incorrect.
  • Burette (or Pipette)
• (ii) The student's answer is correct.
  • Beam balance (or Electronic balance)
• (iii) To hold $50 \text{ cm}^3$ of solution during a chemical reaction, a beaker or a conical flask (Erlenmeyer flask) is typically used. A measuring cylinder is primarily for measuring volumes, not for holding solutions during reactions. The student's answer "Measuring Cylinder" is incorrect.
  • Beaker (or Conical flask)