Year 6 Acids & Alkalis

The pH of pure water

• 5.6

• 7.0

• 8.1

• 0.0

What is the meaning of the above hazard warning symbol?

• Corrosive

• Explosive

• Toxic

• Radioactive

Acid in our stomach:

• Hydrochloric acid

• Sulfuric acid

• Acetic acid

• Carbonic acid

Acid in soft drink:

• 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

The color of universal indicator in pure water:

• Red

• Blue

• Purple

• Green

Reaction between acid and alkali producing salt and water:

• Combustion

• Neutralization

• Precipitation

• Decomposition

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Something that can be used to identify acid/alkali:

• Indicator

• Oxidator

• Reductor

• Terminator