Danyell's Lab Safety Quiz

Washing hands before leaving a lab is important because it helps to prevent the spread of germs and contaminants. Labs often contain hazardous substances, chemicals, and microorganisms that can be harmful if they come into contact with our hands or are transferred to other surfaces. By washing our hands, we can remove any potential contaminants and reduce the risk of contamination to ourselves and others. Therefore, it is always good practice to wash hands before leaving a lab.

Closed toe shoes are the safest option to wear during an experiment because they provide protection to the feet. They cover the entire foot, including the toes, which reduces the risk of injury from falling objects, spills, or chemical splashes. Sandals, on the other hand, leave the toes exposed and provide minimal protection. Not wearing any shoes at all is also unsafe as it leaves the feet vulnerable to potential hazards in the lab environment. Therefore, closed toe shoes are the most appropriate choice for ensuring safety during an experiment.

The correct answer is to protect our eyes from chemicals and other things. Wearing goggles in a lab is essential to prevent any harmful substances from coming into contact with our eyes. Chemicals can cause severe damage or even blindness if they come in contact with the eyes. Goggles act as a barrier, shielding our eyes from any potential hazards such as splashes, fumes, or flying debris. It is a safety measure that ensures the well-being of individuals working in a laboratory setting.

When working in a lab, it is important to tie up your hair. This is because loose hair can pose a safety hazard, as it can come into contact with chemicals, flames, or equipment, potentially causing accidents or contamination. Tying up hair ensures that it is kept away from the face and secured, reducing the risk of it getting in the way or interfering with experiments.

In a lab, a fire extinguisher is essential for safety purposes. It is important to have a fire extinguisher readily available in case of any fire accidents or emergencies that may occur during experiments. Fire extinguishers are designed to suppress and extinguish fires, helping to prevent them from spreading and causing further damage or harm. Therefore, having a fire extinguisher in a lab is crucial to ensure the well-being of the individuals present and to minimize potential risks.

The given answer explains that a fire blanket is important to have because it is easy to use and effective in extinguishing fires. This implies that in case of a fire emergency, a fire blanket can be quickly and easily deployed to smother flames, preventing the fire from spreading and causing further damage. The answer highlights the practicality and usefulness of a fire blanket in fire safety situations.

The word "burner" in the context of the question suggests that it is referring to a heating apparatus or device. Leaving a burner unattended can be dangerous as it can cause accidents such as fires or explosions. Therefore, it is important to never leave a burner unattended to ensure safety.

When handling acids, it is important to always pour them into water rather than the other way around. This is because pouring water into acids can cause a violent reaction, resulting in splashing and potential harm. By pouring acids into water slowly and carefully, the risk of a dangerous reaction is minimized.

Both options C and D are prohibited in the lab. This means that playing around and eating, drinking, and playing around are not allowed. In a lab setting, it is important to maintain a focused and safe environment, and engaging in activities such as playing around or consuming food and drinks can be disruptive and potentially hazardous. Therefore, both options C and D are not allowed in the lab.