Question

a student brings a bottle of water into the lab and sets it near chemicals. why is this unsafe? it could spill and dilute the chemicals drinking water in the lab could cause contamination it could be mistaken for a chemical all of the above. which of the following is the first step in lab safety? begin the experiment quickly. read and understand all lab instructions before starting ask your partner to explain the directions while you set up. skip safety rules since they are optional which of the following should you never do with chemicals in the lab? read the label carefully before using. mix only as instructed. taste them to identify the substance. dispose of them as directed by the teacher

Explanation:

1. Bringing a water - bottle into the lab near chemicals is unsafe because:

• It could spill and dilute the chemicals, altering their properties and potentially causing dangerous reactions.
• Drinking water in the lab could cause contamination if the water is exposed to lab chemicals, and vice - versa.
• The water bottle could be mistaken for a chemical container, leading to accidental misuse.

1. The first step in lab safety is to read and understand all lab instructions before starting. This ensures that you know the proper procedures, potential hazards, and safety precautions.
2. Tasting chemicals in the lab is extremely dangerous as many chemicals are toxic or corrosive. Reading labels carefully, mixing as instructed, and disposing of chemicals as directed by the teacher are all proper lab practices.

Answer:

1. D. All of the above
2. B. Read and understand all lab instructions before starting
3. C. Taste them to identify the substance