ACID AND ALKALI

Front

What is an alkali?

Back

An alkali is a type of base that dissolves in water and produces hydroxide ions (OH-).

Front

What color does blue litmus paper turn when added to an acid?

Back

Red.

Front

What is the pH range of acids?

Back

Acids have a pH less than 7.

Front

What is the pH range of bases?

Back

Bases have a pH greater than 7.

Front

What is a neutral substance?

Back

A neutral substance has a pH of 7.

Front

What instrument is used to measure pH?

Back

pH meter.

Front

What are Group 1 elements known as?

Back

Alkali metals.

Front

What are Group 7 elements known as?

Back

Halogens.

Front

What is the main characteristic of acids?

Back

Acids taste sour and can turn blue litmus paper red.

Front

What is the main characteristic of bases?

Back

Bases taste bitter and feel slippery.