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Quizzes > Science

Middle School Lab Safety Quiz: Can You Pass?

Quick lab safety test for middle school. Instant results with tips to correct mistakes.

Editorial: Review CompletedCreated By: Austin IrwinUpdated Aug 24, 2025
Difficulty: Moderate
2-5mins
Learning OutcomesCheat Sheet
Paper art illustration of test tubes beakers safety goggles on golden yellow background for middle school lab safety quiz

This middle school lab safety quiz helps you check key rules, spot hazards, and learn what to fix before lab day. Get instant feedback and quick tips, then try a deeper science laboratory safety test or a fast science lab safety quiz for extra practice, or review safe lab equipment handling to build good habits.

Why should you wear safety goggles in the lab?
To help you see smaller objects
To protect your eyes from chemical splashes
To block out bright sunlight
To make lab photos look better
Safety goggles form a barrier to keep chemicals and debris from contacting your eyes and causing injury. They also protect against heat or flying particles generated during experiments. Wearing goggles is a basic lab requirement for eye safety.
What should you do before starting any experiment?
Read the instructions and safety rules
Mix chemicals randomly
Turn on all lab equipment
Invite friends to watch
Reading instructions ensures you understand each step and any hazards involved. It helps you prepare the correct materials and follow safety protocols. Skipping instructions can lead to mistakes or accidents.
What is the proper way to smell a chemical in the lab?
Sniff deeply from a distance
Waft the air over the container toward your nose
Pour it on your hand and smell
Put your nose directly into the container
Wafting allows you to detect odors without breathing in concentrated vapors. Direct inhalation can expose you to harmful chemicals. This technique is recommended for identifying unknown substances safely.
Which clothing item is not allowed in the lab?
Open-toed sandals
Long pants
Closed-toed shoes
Lab coat
Open-toed sandals leave feet exposed to spills, broken glass, and dropped equipment. Closed-toed shoes provide a protective barrier. Lab attire must cover skin to minimize injury risk.
What should you do if you see a broken glass on the floor?
Pick it up with bare hands
Ignore it; someone else will clean it
Notify the teacher and use a brush and dustpan
Sweep it into your hand
Using proper tools prevents cuts and injuries from sharp edges. Teachers should be informed to ensure correct disposal. Bare hands risk serious injury.
Why should you tie back long hair in the lab?
To avoid hair static
It is required for the school uniform
To look tidier in pictures
To keep it away from flames and chemicals
Loose hair can catch fire or dip into chemicals, causing burns or contamination. Tying it back reduces these hazards. It also helps keep your work area clear of obstructions.
What is the purpose of a lab apron?
To show your team color
To protect clothing and skin from spills
To keep you warm in cold labs
To hold extra lab tools
Lab aprons shield your clothes and skin from spills, splashes, and minor chemical contact. They provide an extra layer of barrier protection. Aprons should be removed immediately if contaminated.
When using a Bunsen burner, what is the safest way to ignite it?
Light a match and hold it under the nozzle
Light paper and bring it near
Use a striker while keeping your hand away
Turn on gas fully then spark
A striker produces a spark at a safe distance from your hand. Matches can burn unpredictably and hold your hand too close to the gas. Always check that the airhole is adjusted for a blue flame.
How should you dispose of chemical waste if not specified by your teacher?
Dump it in the trash bin
Pour it outside in the schoolyard
Flush it down the sink with water
Ask the teacher or follow the Safety Data Sheet instructions
Chemical disposal procedures depend on the properties of the waste. Teachers and SDSs provide correct methods to avoid environmental harm. Improper disposal can cause reactions or pollution.
What is the correct way to mix acids and water?
Add acid slowly to water while stirring
Pour both together quickly
Add water to acid continuously
Heat the acid first
Adding acid to water dissipates heat slowly and prevents splattering. The rule "Do what you oughta, add acid to water" helps avoid violent reactions. Adding water to acid can generate heat that causes boiling and splashes.
What do you do if you spill a non-hazardous chemical on the bench?
Wipe it up, clean the surface, and notify the teacher
Sweep it onto the floor
Cover it with paper towels only
Leave it to dry
Cleaning spills immediately prevents slips and contamination of other experiments. A teacher should confirm the cleanup was sufficient. Non-hazardous chemicals still require proper surface cleaning.
Why should you never eat or drink in the lab?
To keep your papers clean
To avoid ingesting toxic chemicals
It is against school dress code
To save time on experiments
Lab surfaces can be contaminated with chemicals that may be poisonous if ingested. Eating or drinking can also distract you from safe procedures. Safety zones must be free from food to protect health.
What do you do if you get a chemical splash in your eye?
Rinse under the eyewash station for at least 15 minutes
Rinse for 5 seconds and stop
Wipe it with a tissue and continue
Cover it and tell a friend
The eyewash station provides continuous gentle flow to flush out irritants. Fifteen minutes ensures the chemical is fully diluted and removed. After rinsing, seek medical evaluation.
How do you properly clean a graduated cylinder after use?
Wipe with a dry cloth
Soak in soap solution without rinsing
Shake out residue and store
Rinse with tap water then rinse with distilled water
Tap water removes most residue, and distilled water leaves no mineral deposits. Drying prevents contamination of future measurements. Soap residue can skew results if not fully rinsed away.
When heating a test tube, why should you angle the open end away from people?
To avoid bending the test tube
So it heats faster
To prevent hot liquids or vapors from spraying onto others
For more even heating
Heating liquids generates pressure that can cause sudden ejection of hot content. Angling the tube directs any spray away from faces and skin. This reduces risk of burns and eye injury.
Which fire extinguisher should you use on an electrical fire?
Class B extinguisher
Class C extinguisher
Water hose
Class A extinguisher
Class C extinguishers are designed for electrical fires, using nonconductive agents. Water conducts electricity and can cause shock. Class A and B are for ordinary combustibles and flammable liquids, respectively.
What is the purpose of the SDS (Safety Data Sheet)?
To record experiment results
To list student lab grades
To provide detailed information on chemical hazards and handling
To schedule lab times
SDS documents hazards, first-aid measures, storage, disposal, and PPE requirements for chemicals. It is a legal document that ensures users can handle substances safely. Employers and students rely on SDS for risk assessment.
Why is it important to label all lab containers?
To track who owns each container
To prevent mix-ups and ensure safe usage
Because labels are required by dress code
To make the lab look organized
Unlabeled containers can lead to dangerous chemical reactions or misuse. Proper labeling includes the chemical name, concentration, and date. This practice minimizes risk and helps in emergency response.
What safety rule applies when working with flammable solvents?
Mix strongly in open containers
Keep sources of ignition away and use a fume hood if needed
Always heat them before use
Store near open flames for quick evaporation
Flammable solvents can ignite from sparks, flames, or hot surfaces. Using a fume hood reduces vapor buildup while keeping ignition sources distant prevents fires. Proper storage and handling minimize risk.
How do you neutralize a minor acid spill on the countertop?
Wipe it with a dry cloth
Cover with sand
Spray with water only
Cover it with baking soda, then wipe up and rinse
Baking soda (a base) neutralizes acids safely into salt and water. After reaction, the residue can be wiped up without corrosive hazard. Rinsing ensures no harmful residues remain.
Which type of glove is best for handling strong acids?
Leather gloves
Nitrile gloves
Latex gloves
Cotton gloves
Nitrile gloves resist punctures and many chemicals including acids. Latex can degrade when exposed to harsh chemicals. Cotton and leather offer no chemical resistance. Always check the glove manufacturer's compatibility chart.
How do you properly calibrate a pH meter before use?
Rinse the electrode, immerse in pH 7 buffer, adjust, then use pH 4 or 10 buffer
Heat the electrode before use
Dip it in distilled water only
Turn it on and start measuring samples immediately
Calibration requires at least two standard buffers: pH 7 and either pH 4 or 10 to ensure linear response. Rinsing prevents cross-contamination. Proper calibration guarantees accurate pH readings.
What is the first step in the lab protocol for handling biohazardous materials?
Sterilize everything after handling
Review the biosafety level and don appropriate PPE
Pour material into the sink
Label containers afterward
Different biohazards require specific biosafety level practices and PPE such as gloves, gowns, and eye protection. Reviewing protocols prevents exposure. Proper PPE is the first barrier against infection.
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Study Outcomes

  1. Identify essential science lab safety rules -

    After the quiz, you can accurately recall the key guidelines that keep experiments safe in a middle school lab environment.

  2. Understand proper protective equipment usage -

    Learn how and when to use goggles, gloves, and lab coats to protect yourself during experiments.

  3. Apply correct procedures for handling emergencies -

    Outline the steps to take during spills, fires, or accidents to maintain a safe lab environment and respond effectively to unexpected situations.

  4. Recognize common laboratory hazards -

    Spot and interpret hazard symbols on chemicals and equipment to prevent misuse of potentially dangerous substances.

  5. Demonstrate safe operation of lab tools -

    Follow best practices when using Bunsen burners, glassware, and other instruments to minimize the risk of accidents.

Cheat Sheet

  1. Personal Protective Equipment (PPE) -

    Always don safety eyewear, lab coats, and chemical-resistant gloves to shield against splashes and spills. Use the "GAP" mnemonic (Goggles, Apron, Protective gloves) to remember essential gear. According to OSHA and the American Chemical Society, proper PPE can prevent over 60% of common laboratory injuries and is often the first topic in a lab safety quiz.

  2. Chemical Labels & Hazard Symbols -

    Learn the Globally Harmonized System's nine pictograms, such as the flame for flammables and the skull for acute toxicity. These symbols form the backbone of science lab safety rules and are often tested in the middle school lab safety quiz. Complying with OSHA's Hazard Communication Standard ensures you can identify and handle every substance safely.

  3. Safe Glassware Handling -

    Always inspect glassware for chips or cracks before use, as recommended by the University of California's lab safety manual. When inserting glass tubing into stoppers, use glycerin as a lubricant and apply gentle, even pressure at a 45° angle to avoid breakage. Remember the phrase "Slow and Steady Prevents the Shred" to help recall safe handling procedures.

  4. Emergency Protocols & First Aid -

    Familiarize yourself with safety showers, eyewash stations, and fire extinguishers locations as outlined by the NIH Office of Research Facilities. In case of chemical exposure to the eyes, flush for at least 15 minutes under running water. Practicing these steps in a free lab safety quiz or lab safety knowledge quiz can boost confidence and response time in real emergencies.

  5. Chemical Waste Disposal & Housekeeping -

    Separate acidic, basic, and organic wastes in properly labeled containers following EPA hazardous waste regulations. Use the "SAG" rule (Separate Acids, then Alkalis, then Organics) to avoid dangerous reactions, a tip recommended by the American Chemical Society. A tidy workstation not only reduces contamination but also scores high on any middle school lab safety quiz.

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