Hazardous Symbols

What does this symbol mean?

• Flammable

• Explosives

• Oxidising Agent

• Corrosive

What does this Symbol mean?

• Corrosive

• Irritant

• Poison

• Carcinogenic

When is it OK to eat or drink in the lab?

• Always
• Never

diagram above shows a hazard symbol. what is the meaning of this symbol?

• flammable

• irritant

• explosive

• poisonous

Tags

NGSS.MS-PS1-2

Diagram above shows three types of bottles with different labels. What are the chemicals that might contain inside bottle P, Q and R?

• P: chloroform, Q: ethanol, R: mercury

• P: Radium, Q: mercury, R: Pottasium

• P: Benzene, Q: potassium, R: radium

• P: lead, Q: petrol, R: chloroform

Tags

NGSS.MS-PS1-2

The above hazard symbol means ......

• explosive

• flammable

• toxic or poisonous

• corrosive

Tags

NGSS.MS-PS1-2

If you see above symbol, beware of materials that can

• release fume that can hurt eyes, nose and throat.

• cause harmful radiation.

• cause poisoning and death if swallowed

• easily expolde.

What you should do if someone inhaled toxic gas?

• Hold under running water

• Spit out immediately

• Move away from the gas for fresh air

• Flush eyes vigorously with water

Corrosive substances such as bleaches and drain cleaners can cause ......

• difficult of breathing

• serious burns and eye damage

• permanent amnesia

• massive headache

Aerosol is categorized as ......

• Oxidising

• Flammable

• Explosive

• Toxic