Weigh boats should be disposed of after weighing substances by...

Weigh boats should be disposed of after weighing substances by...

• A. Reuse weigh boats for the next experiment
• B. Throw the weigh boats in the trash
• C. Place weigh boats on the balance
• D. Save weigh boats for later use

Answer: (B)

The main idea is preventing cross-contamination and keeping measurements accurate. After a substance is weighed, residues cling to the weigh boat. If you reuse it, those residues can contaminate the next sample or alter the mass reading, leading to incorrect results. Leaving the boat on the balance or saving it for later increases the chance of transfer and confusing data. Discarding the used weigh boat minimizes these risks and keeps the workspace clean. If the substance is hazardous, it should go to the proper waste container for chemical waste rather than ordinary trash, but the principle remains: once weighed, the boat shouldn’t be reused or kept for later.

The main idea is preventing cross-contamination and keeping measurements accurate. After a substance is weighed, residues cling to the weigh boat. If you reuse it, those residues can contaminate the next sample or alter the mass reading, leading to incorrect results. Leaving the boat on the balance or saving it for later increases the chance of transfer and confusing data. Discarding the used weigh boat minimizes these risks and keeps the workspace clean. If the substance is hazardous, it should go to the proper waste container for chemical waste rather than ordinary trash, but the principle remains: once weighed, the boat shouldn’t be reused or kept for later.