Science 9: Lab Safety and Equipment

Which of the following is the MOST important reason for understanding laboratory safety procedures?

Which of the following should you do FIRST if you spill a chemical on your skin?

Before beginning a lab activity, what is the MOST important step to take?

What should you do if an experiment doesn't work the first time?

When is it acceptable to remove your safety goggles in the lab?

Why is it important to add acid to water, rather than water to acid?

Under what circumstance are you allowed to conduct your own unauthorized experiments?

What is the MOST appropriate way to handle broken glassware?

Which of the following is generally forbidden in the lab?

Why should you never return unused chemicals to their original containers?

What is the purpose of a Material Safety Data Sheet (SDS)?

What should you do if you are unsure about a step in a lab procedure?

In the event of a fire in the lab, what is the FIRST action you should take?

Why is it important to keep your work area clean and free of clutter?

What does the acronym WHMIS stand for in the context of laboratory safety?

When is it acceptable to taste a chemical in the lab?

If a piece of equipment is damaged, what is the appropriate course of action?

Why is it important to read the label on a chemical container before using its contents?

In what situation is it permissible to pour chemicals down the sink?

What should be done with waste materials and remains from experiments?

Define Personal Protective Equipment (PPE) in the laboratory.

The SDS for a particular chemical lists 'kidney, liver, mucous membranes, upper respiratory tract, skin, eyes, circulatory system, and teeth' as potential targets for chronic health effects. What can be inferred from this information?

Which statement accurately describes the relationship between risk assessment and lab safety?

A student notices a small crack in a beaker before starting an experiment. What is the MOST appropriate course of action and why?

Why is it important to understand the potential health effects listed on an SDS, such as target organs and routes of exposure?

A student is heating a test tube containing a solution. What is the MOST important safety precaution to take during this procedure?

What is the key difference between a beaker and an Erlenmeyer flask in terms of their suitability for mixing chemicals?

Why is it critical to avoid loose clothing, long unrestrained hair, and dangling jewelry in the lab?

In the context of using a Bunsen burner, what does the presence of an orange or yellow flame indicate, and why is it important?

Which scenario BEST exemplifies the importance of never working alone in a laboratory setting?

When using a hot plate, which precaution is MOST critical to prevent burns or fire hazards?

Why is it essential to know the location of safety equipment (fire extinguisher, eye wash station, etc.) in the laboratory BEFORE starting an experiment?

Why should one avoid 'mucking around' in a lab?

The label on a container of concentrated sulfuric acid includes the following pictograms: a flame, a corrosive symbol, and a health hazard symbol. What combination of PPE is MOST appropriate when working with this chemical?

In a lab, a student accidentally mixes two clear, colorless solutions in a beaker. Immediately after mixing, the beaker becomes very hot to the touch and emits a plume of noxious gas. What immediate actions should the student take, in the correct order?

What is the primary reason students are prohibited from entering the lab without a teacher?

Why is it important never to 'muck around' or run in the lab?

Why is food and drink prohibited in the laboratory?

What is the recommended action if you do not understand an instruction during a lab activity?

Why must equipment be cleaned and returned to its proper place after an experiment?

What action should be taken immediately after any accident (even a minor one) in the lab?

What should you do if you break a glass container during a lab?

Laboratory equipment and chemicals are okay to use:

Why is it important to put out burning materials completely before throwing them away?

What is the proper procedure for handling hot equipment?

Why should long hair and loose clothing be secured during experiments?

What type of shoes are suitable for lab?

When should you wash your hands in the laboratory?

What should you use gas taps and water for?

After a practical experiment, bench tops should be:

When heating or mixing substances, why should you avoid pointing the container towards yourself or others?

What is a potential consequence of misbehavior and breaking safety rules in the lab:

According to lab safety rules, what should you always do after using any equipment in the lab?

What is the MOST important reason for disposing of waste products from experiments as instructed?

When is it acceptable to mix chemicals or conduct your own experiments in the lab?

What is the significance of turning a Bunsen burner to a visible orange or yellow flame when not in active use?

Which of the following personal protective equipment (PPE) is MOST important to wear when conducting an experiment that creates a visible mist?

What is the primary purpose of the Safety Data Sheet (SDS)?

According to the SDS excerpt provided for hydrochloric acid, what is a potential acute health effect of skin contact?

If hydrochloric acid comes into contact with your eyes, what is the FIRST recommended first aid measure?

According to the SDS excerpt, what is one of the listed potential chronic health effects of exposure to hydrochloric acid?

What is a primary instruction for the 'Handling and Storage' of hydrochloric acid, according to the provided SDS excerpt?

What is the MOST significant hazard associated with mixing hydrochloric acid with metals, according to the SDS?

What is the correct meaning of the WHMIS symbol featuring a test tube pouring liquid onto a hand and a metal bar, both of which are being corroded?

According to the WHMIS system, what does a hazard symbol framed by a triangle indicate?

According to the WHMIS system, what does a hazard symbol framed by an octagon indicate?

Under what circumstances is it acceptable to taste a chemical in the lab, as mentioned in the Lab Safety Rules?

In a scenario where your partner's shirt catches fire, what is the MOST effective immediate response?

After finishing a lab, why should you NOT pour leftover chemicals back into their original containers?

You accidentally spill a small amount of water on the classroom floor. What is the appropriate course of action?

What should you do if you miss the teacher's instructions for a lab activity?

In what instance is it unsafe to use a chemical?

A student is tasked with determining the rate of a chemical reaction at various temperatures. They decide to use a standard laboratory thermometer, but accidentally grab one filled with mercury, unaware of the potential hazard. As they heat the solution, the thermometer breaks, releasing mercury onto the hot plate and into the surrounding environment. What combination of immediate and subsequent actions would BEST address this scenario?