Lab Safet y I
Any time chemicals, heat, or glassware are used, you must wear these
what are goggles
how long you must flush your eyes with running water at the eye station if chemicals splash in them
what is 20 minutes
what are snake venom, arsenic, and formaldehyde
May irritate the skin, or exhibit minor toxicity. This chemical should be kept away from the skin and eyes
what is an irritant
number of steps in the scientific process/method
what are 6
This must be tied back during the lab
what is long hair
what you should never handle hot or broken glass wear with
what are bare hands
Container contains pressurized gas. This may be cold when released and explosive when heated. Containers should not be heated.
what is gas under pressure
May cause burns to skin and damage to eyes. May also corrode metals. Avoid skin and eye contact. Do not breathe vapors.
what is corrosive
an objective fact learned by using human senses
what is an observation
Consizered hazards and must be removed prior to lab
what are baggy clothes, dangling jewelry, and loose hanging clothes
what you should not use flammable materials over
what is an open flame
Toxic to aquatic life with long lasting effects
what are environmental hazards
May cause or intensify a fire, Burns even in the absence of air, Bleach & oxygen for medical purposes
what is oxidizing
a reasonable conclusion based on observations and evidence
what is an inference
These are what to be worn on your feet during the lab
what are closed toe shoes
Where you should point a test tube
what is away from all faces and waft the aroma with the movement of your hand if inspecting the smell of something
May explode as a consequence of fire, heat, shock or friction. Should be kept away from potential ignition sources.
what is explosive
May cause genetic defects, May cause cancer, May cause damage to organs, May cause asthma symptoms or breathing difficulties if inhaled.
what is a respiratory irritant
written statement, not a question, and is testable to be either properly supported or rejected through evidence
what is a hypothesis
this is who you report any accident or injury to during lab
who is Ms. Barrentine
utilized in the lab and contains detailed safety information on a chemical
what is the material safety data sheet (MSDS)
when exposed to heat, fire, or sparks, or gives off flammable gases when reacting with water.
what is flammable
these are never allowed in lab and should be kept in your lunch box, book bag, or left in the classroom
what are food and drinks
Predicts NO RELATIONSHIP between two phenomena, no difference among groups. “Devil’s advocate” hypothesis (since usually you’re interested in showing some sort of relationship—but not always! Tobacco scientists)
what is a null hypothesis