EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In the laboratory, one should NEVER ____
A
ask questions
B
know how to contact help
C
wear safety goggles and a lab apron
D
perform experiments without your teacher’s permission.
Explanation: 

Detailed explanation-1: -A student should never stay in the laboratory alone or work without an instructor present. 2. Performing unauthorized experiments or any experiment at unauthorized times is forbidden. Unanticipated results to an unauthorized or altered experiment can be quite hazardous.

Detailed explanation-2: -Unauthorized experiments are dangerous, distract other students, and are strictly prohibited. Conducting unauthorized experiments will be cause for ejection from lab. Treat every chemical as if it is hazardous. You are not allowed to be in the laboratory without an instructor present.

Detailed explanation-3: -DO NOT TOUCH ANY EQUIPMENT OR LAB MATERIALS UNTIL INSTRUCTED TO DO SO. USE MATERIALS ONLY AS INSTRUCTED. 6. PERFORM ONLY APPROVED EXPERIMENTS UNLESS YOUR TEACHER GIVES YOU PERMISSION TO DO SOMETHING DIFFERENT.

Detailed explanation-4: -Laboratory safety glasses or goggles should be worn in any area where chemicals are used or stored. They should also be worn any time there is a chance of splashes or particulates to enter the eye. Closed toe shoes will be worn at all times in the laboratory. Perforated shoes or sandals are not appropriate.

Detailed explanation-5: -Do not eat, drink, chew gum, smoke or apply cosmetics in the lab. Do not put pieces of lab equipment in your mouth. Do not work with chemicals until you are sure of their safe handling. Do not use the phone or computer with gloves on your hands.

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