Biochemistry Lab Safety Guidelines

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Questions and Answers

Which of the following is NOT a special precaution for working with heat or fire?

Inflammable liquid bottles should not be dispensed near a naked flame.
Never handle hot materials without wearing gloves. (correct)
Never leave a lighted Bunsen burner unattended.
Use test tube holders to handle hot laboratory equipment.
Use only Pyrex glassware's for heating.

What are the main types of hazards that laboratory safety symbols are designed to warn people of?

Physical and chemical hazards
Biological and chemical hazards
All potential hazards (correct)
Electrical hazards only
Chemical hazards only

It is acceptable to leave a hot object unattended after removing it from a heat source.

False (B)

When diluting acid, what is the correct procedure?

Add acid to water. (A) Signup and view all the answers

Always smell substances in the laboratory without specific instructions.

False (B) Signup and view all the answers

A good way to prevent accidents is to wear open shoes, such as sandals, when working in a laboratory.

False (B) Signup and view all the answers

When working with chemicals, it is crucial to ensure all containers are ______.

properly labeled Signup and view all the answers

What is the primary purpose of a lab coat?

To protect the wearer's clothes from splashes, chemicals, and other contaminants. Signup and view all the answers

It is acceptable to leave unused materials on the laboratory floor.

False (B) Signup and view all the answers

When working in a laboratory, it is okay to run in case of an emergency if you need to reach a specific location quickly.

False (B) Signup and view all the answers

What should be done if you find damaged laboratory apparatus?

Remove it immediately. Signup and view all the answers

Why is it important to wash your hands after working with chemicals?

To prevent accidental ingestion or transfer of chemicals to other parts of the body or to other objects. Signup and view all the answers

What steps should be taken if a chemical is accidentally swallowed?

Give the person water immediately. If the chemical is an acid, give them milk to drink. If the chemical is an alkali, give them diluted acetic acid. Signup and view all the answers

Which of the following symbols represents a corrosive substance?

Hand with corrosive damage (C) Signup and view all the answers

What are two reasons why it's important to keep exits and passageways clear in the laboratory?

Clear exits and passageways allow for safe and quick evacuation in case of an emergency, and they prevent accidents or falls due to obstructed paths. Signup and view all the answers

It is acceptable to use broken or chipped glassware in the laboratory.

False (B) Signup and view all the answers

What should be done to clean broken glass safely in the laboratory?

Pick up broken glass with a broom and dustpan, then dispose of it in a designated sharps container. Signup and view all the answers

What is the purpose of laboratory safety symbols?

Laboratory safety symbols are used to quickly and easily communicate potential hazards to people working in the lab. Signup and view all the answers

Chemicals labeled as toxic can cause death if they penetrate the skin, are inhaled, or are swallowed.

True (A) Signup and view all the answers

Flammable substances are not hazardous if they are kept away from open flames and electricity.

False (B) Signup and view all the answers

Where should a hot object be placed after it has been removed from a heat source?

In a designated area where it can cool and be shielded from contact. (C) Signup and view all the answers

It is safe to leave flammable liquid bottles open in a laboratory even if they are not near heat.

False (B) Signup and view all the answers

Describe the appropriate procedure for cleaning up a chemical spill on the floor.

First, wear appropriate protective gear, such as gloves and a lab coat. Then, use an absorbent material to soak up the spill and place it in a designated chemical waste container. Signup and view all the answers

Why is it important to use only Pyrex glassware for heating?

Pyrex glassware is designed to resist heat and thermal shock, making it suitable for use in heating processes. Regular glassware can crack or shatter when exposed to sudden temperature changes. Signup and view all the answers

It is acceptable to work with live animals in a laboratory without any specific instructions.

False (B) Signup and view all the answers

Laboratory safety symbols are designed to warn people only about the potential dangers of chemical substances.

False (B) Signup and view all the answers

The symbols used to communicate laboratory safety are considered universal and are understood by people from different cultures.

True (A) Signup and view all the answers

It is acceptable to unplug an appliance without turning off the power switch.

False (B) Signup and view all the answers

What are some examples of common laboratory equipment that might be dangerous to handle if it is hot?

Examples include heating elements, Bunsen burners, test tubes, beakers, flasks, glassware, and metal objects. Signup and view all the answers

It is better to wear gloves than to wash your hands when working with chemicals.

False (B) Signup and view all the answers

It is okay to work in a laboratory with wet hands.

False (B) Signup and view all the answers

What are the risks of working with live cultures in a laboratory?

Working with live cultures poses a risk of infection if not handled properly. Accidental exposure can lead to illness. Signup and view all the answers

What is the purpose of detergents in a laboratory?

Detergents are used to sterilize surfaces, equipment, and glassware to kill microorganisms and reduce the risk of contamination. Signup and view all the answers

Wearing a lab coat in the laboratory is only necessary when working with chemicals.

False (B) Signup and view all the answers

Flashcards

Laboratory Safety

Practices to prevent accidents and injuries in labs.

Hazardous Materials

Materials that can cause health issues or damage.