Acids and Bases

Acids and Bases

Multiple Select

What are the basic properties of Acids?

• Bitter taste

• Burning sensation

• Sour taste

• slippery nature

Acids

Acids are generally SOUR in taste.

And they are CORROSIVE.

Eg : Orange juice

Multiple Select

What are the common properties of bases?

• Bitter taste

• Corrosive

• Sour taste

• Soapy nature

Bases

Bases generally have a BITTER taste

They are identified with their SOAPY NATURE

They are CORROSIVE as well

Eg : soap

Open Ended

What are neutral substances?

Neutral

Substances which do not show the properties of Acids or Bases.

Eg : Water

Open Ended

What are indicators?

Indicators

Substances/Solutions which change color in acids and bases.

They are used to identify if a solution is acidic or basic or neutral.

Multiple Select

Which of the following are natural indicators?

• Litmus paper

• Red cabbage solution

• pH paper

• Shoe flower solution

Multiple Choice

Which of the following is not an indicator used in the laboratory?

• Blue litmus paper

• Methyl orange

• Hydrogen peroxide solution

• phenolphthalein

Indicators used in the laboratory.

Litmus paper
Methyl Orange solution
pH paper
Phenolphthalein

Multiple Choice

What colour does a red litmus turn in bases?:

• Blue

• Red

• Pink

• Purple

Multiple Choice

What colour does blue litmus show in a neutral solution?

• Red

• Blue

• Pink

• Yellow

pH

pH papers are light yellow papers used in the lab to identify acids, bases and neutral substances.

Phenolphthalein

Colorless in Acids

Pink in Bases

Methyl Orange

Red in Acids

Yellow in Bases