lab safety grade 9 and 10 science

Lab SafetyGrade 9 and 10 Science

http://www.youtube.com/watch?v=FnblmZdTbYs

Safety Glasses

Do not collect your safety glasses until instructed to do so, and return your safety glasses after the lab is complete.

Safety GlassesThey must be worn the entire

time Bunsen burners or chemicals are used at your desk or an adjacent desk

Safety GlassesThey must be worn the entire

time Bunsen burners or chemicals are used at your desk or an adjacent desk, and they must be worn over the eyes, not on the forehead.

Other Attire

Long hair should be tied back, dangling jewelry removed, drawstrings tucked in, and long sleeves rolled up.

Open-toed footwear should not be worn.

Valuables

All valuables, especially electronics (cell phones, iPods, etc.) should not be anywhere near the lab.

Injury Prevention

Lab benches and the floor must be clear of clutter.

Injury Prevention

Be aware of other students at desks around yours!

Injury Prevention

Labs should be done standing up. Stools should be pushed under the benches. If you need to observe a reaction at eye level, crouch down.

Alerts

All accidents (fire, spills, broken glass, etc.) must be reported to the teacher immediately.

Alerts

Note the location of the:• Two exits. Exit through the

science office only if the main exit is blocked by fire.

• Fire extinguisher. Located between the teacher’s bench and the door to the science office.

Alerts

Note the location of the:• Eye wash station. Open both eyes while the

water is running into your eyes.

Alerts

Note the location of the:• Broken glass disposal. Do

not touch broken glass with your hands, especially if the glass contained chemicals.

Alerts

Chemical spills (especially acid or base spills) should not just be wiped up with a paper towel. Always ask your teacher for the correct procedure.

Demonstration

Sodium and water don’t mix. . . .

Chemical Disposal

All chemicals and the first rinse of any glassware should be disposed of in the labelled container indicated by your teacher.

Solid materials should be placed in a separate disposal bucket.

And Lastly. . .

Wash your hands thoroughly after completing every lab.

Never

Never perform any experiment that has not been explicitly authorized by the teacher.

Never perform an experiment if you do not understand a direction or part of a procedure.

ASK YOUR TEACHER BEFORE PROCEEDING.

Lab Equipment

A _______ is used for reacting small quantities of reactants.

A test tube is used for reacting small quantities of reactants.

Test tubes are always placed in a ____ ___ ___ when reactions are occurring in them.

Test tubes are always placed in a test tube rack when reactions are occurring in them.

___________ may be used to pick up small containers such as evaporating dishes and test tubes. 

Crucible tongs may be used to pick up small containers such as evaporating dishes and test tubes. 

Reactions of quantities too large to be placed in a test tube are done in a ______.

Reactions of quantities too large to be placed in a test tube are done in a beaker.

_____ ____ are used to safely handle hot beakers.  

Beaker tongs are used to safely handle hot beakers.  

A ________ ______ has fine gradations to precisely measure volumes of liquid. 

A graduated cylinder has fine gradations to precisely measure volumes of liquid. 

An _____________ may be used to swirl liquids without fear of spilling. 

An Erlenmeyer flask may be used to swirl liquids without fear of spilling. 

A _____ is used to direct the flow of liquid into a test tube or flask.   

A funnel is used to direct the flow of liquid into a test tube or flask.   

A _______ is used to pick up small quantities of powdered chemicals.  

A scoopula is used to pick up small quantities of powdered chemicals.  

______ may be used to pick up small objects such as metal strips. 

Forceps may be used to pick up small objects such as metal strips. 

Most heating of chemicals in a science lab is done using a ______ ______. 

Most heating of chemicals in a science lab is done using a Bunsen burner . 

A ________ is used to safely light Bunsen burners. 

A flint lighter is used to safely light Bunsen burners. 

A ____ ____ is used to support test tubes and beakers over a Bunsen burner. 

A retort stand is used to support test tubes and beakers over a Bunsen burner. 

A ___ ___ ____ may be used to attach test tubes to a retort stand. 

A test tube clamp may be used to attach test tubes to a retort stand. 

A large ___ ___ is placed around a beaker to prevent it being knocked over when the beaker is supported over a Bunsen burner. 

A large iron ring is placed around a beaker to prevent it being knocked over when the beaker is supported over a Bunsen burner. 

A ____ ____ is placed under a beaker when a beaker is placed on an iron ring to be heated over a Bunsen burner.  

A wire gauze is placed under a beaker when a beaker is placed on an iron ring to be heated over a Bunsen burner.