SCIENCE KSSM DLP FORM 4 : CHAPTER 1

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NGSS.MS-PS1-2

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NGSS.MS-PS1-2

Which self protective equipment that we need to wear in the lab to protect the eyes from hazardous chemical substances such as acid, bromine, ammonia and reactive metal.

• gloves

• face mask

• goggles

• google

Choose correct self protective equipment with their functions.

• goggles - protect the nose and mouth from inhaling pungent and volatile chemical substances and dust.

• lab coat - must be worn because it protect the feet from chemical substance spills and glass splinters.

• gloves - to protect hands from hazardous chemical substances.

• face mask - to protect clothing from damage.

All this are examples of substances that can be disposed of into sinks EXCEPT :

• low concentration of acid

• radioactive waste

• water

• weak alkalis

What is the proper way to manage biological waste substances?

• Manage by using Standard Operating Procedures.

• Manage by throwing into the sink.

• Manage by throwing into dustbin in the laboratory.

• Give to your friends.

How to manage the biological waste for experimental animals, like mouse and frogs?

• throw into the dustbin.

• wrapped in absorbent material (tissue paper), packaged well in a biohazard plastic bag and frozen before disposal.

• decontaminated by autoclave

• Keep in refrigerator.