Explain two neutralisation reactions related to daily life situation.

Mark “T” if the statement is true and “F” if it is false:

i. Nitric acid turns red litmus blue. (T/F)

ii. Sodium hydroxide turns blue litmus red. (T/F)

iii. Sodium hydroxide and hydrochloric acid neutralize each other and form salt and water. (T/F)

iv. Indicator is a stub stance which shows different colours in acidic and basic solutions. (T/F)

v. Tooth decay is caused by the presence of a base. (T/F)

Ammonia is found in many house-hold products, such as window cleaners. It turns red litmus blue. What is its nature?

The correct way of making a solution of acid in water is to

State whether the following statements are true or false. Correct the false statements.

(a) All substances are either acidic or basic.

(b) A compound if acidic will turn all indicators red.

(c) Lime water turns red litmus blue.

(d) Common salt dissolved in water turns blue litmus red.

(e) Phenolphthalein is a natural indicator.

(f) Calamine can be used to treat ant’s sting.

(g) Lemon water is basic in nature.

Which of the following set of substances contain acids?

The correct way of making a solution of acid in water is to

You are provided with four test tubes containing sugar solution, baking soda solution, tamarind solution, salt solution. Write down an activity to find the nature (acidic/basic/neutral) of each solution.

Explain two neutralisation reactions related to daily life situation.

Match the substances in Column I with those in Column II

State differences between acids and bases.