Laboratory Safety Rules

　　Science is a hands-on(实际操作的) laboratory class.You will be doing many lab activities which may need the use of chemicals or equipment.To make sure of a safe science classroom，we provide you with a list of rules.These rules must be followed at all times.

　　GENERAL GUIDELINES(准则)

　　1．Never work alone.No student may work in the lab without a teacher present.

　　2．When first entering a lab，do not touch any equipment，chemicals，or other materials in the lab until you are asked to do so.

　　3．Do not eat，drink，or chew gum in the lab.Do not use lab glassware as containers for food or drink.

　　4．Know the positions and operating procedures(程序) of all safety equipment，including the first-aid kit and the fire extinguisher(灭火器)．Know where the fire alarms and the exits are.

　　5．Check the labels(标签) on chemical bottles twice before removing any of the chemicals.Take only as many chemicals as you need.

　　6．Most chemicals in the lab are considered to be dangerous.Do not touch，taste，or smell any chemicals unless specifically asked to do so.

　　7．At the end of your experiment，clean everything carefully and return your equipment to where you got it.Wash your hands with soap and water after performing all experiments.

　　WHAT TO WEAR

　　1．Dress properly during a lab activity.Long hair must be tied back and shoes must completely cover the feet.

　　2．Contact lenses should not be worn in the lab unless you are allowed by your teacher.

　　3．Any time chemicals，heat，or glassware is used，students will wear lab goggles(护目镜)．Nobody should break this rule!

　　ACCIDENTS AND INJURIES

　　1．Report any accident or injury to the teacher immediately.

2．If a chemical should get into your eye(s) or onto your skin，go to see a school nurse