Term
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Definition
Special disposal procedures need to be followed.
Precaution-Do not dispose of these materials in the sink or trash can. |
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Term
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Definition
Organisms or other biological materials that might be harmful to humans.
Precaution-Avoid skin contact with these materials. Wear mask or gloves. |
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Term
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Definition
Objects that can burn skin by being too cold or too hot.
Precaution-Use proper protection when handling. |
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Term
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Definition
Use of tools or glassware that can easily puncture or slice skin.
Precaution-Practice common sense behavior and follow guidelines for use of the tool. |
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Term
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Definition
Possible danger to respiratory tract from fumes.
Precaution-Make sure there is good ventilation. Never smell fumes directly. Wear a mask. |
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Term
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Definition
Possible danger from electrical shock or burn.
Precaution-Double-check setup with teacher. Check condition of wires and apparatus. |
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Term
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Definition
Substances that can irritate the skin or mucous membranes of the respiratory tract.
Precaution-Wear dust mask and gloves. Practice extra care when handling these materials. |
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Term
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Definition
Chemicals can react with and destroy tissue and other materials.
Precaution-Wear goggles,gloves,and an apron. |
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Term
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Definition
Substance may be poisonous if touched,inhaled,or swallowed.
Precaution-Follow your teacher's instructions. |
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Term
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Definition
Flammable chemicals may be ignited by open flame, spark, or exposed heat.
Precaution-Avoid open flames and heat when using flammable chemicals. |
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Term
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Definition
Open flame in use, mau cause fire.
Precaution-Tie back hair and loose clothing. Follow teacher's instruction on lighting and extinguishing flames. |
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Term
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Definition
| Proper eye protection should be worn at all times by anyone performing or observing science activities. |
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Term
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Definition
| This symbol appears when substances could stain or burn clothing. |
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Term
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Definition
| This symbol appears when safety of animals and students must be ensured. |
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Term
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Definition
| After the lab, wash hands with soap and water before removing goggles. |
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