acids and alkali

What is the meaning of the above hazard warning symbol?

• Corrosive

• Explosive

• Toxic

• Radioactive

Acid in vinegar:

• Hydrochloric acid

• Sulfuric acid

• Acetic acid

• Carbonic acid

Which substance is alkali?

• Toothpaste

• Vinegar

• Lemon juice

• Soft drink

The color of litmus in acid:

• Red

• Blue

• Purple

• Green

The color of litmus in alkali:

• Red

• Blue

• Purple

• Green

Acids taste .....

• sour

• bitter

• sweet

• umami

Reaction between acid and alkali producing salt and water:

• Combustion

• Neutralization

• Precipitation

• Decomposition

Something that can be used to identify acid/alkali:

• Indicator

• Oxidator

• Reductor

• Terminator

Alkalis feel...

• Rough

• Soapy

• Granulated

• Smooth

What does this warning symbol mean?

• Toxic

• Corrosive

• Flammable

• Irritant