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Introduction to Acids, Bases, and Salts

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Questions and Answers

What type of material is a base?

Material that reacts with an acid to produce water and salt (correct)

Substance that produces a salt when reacting with an acid

Material that tastes sour and turns blue litmus red

Material that reacts with a base to produce only water

Which type of mixture does not settle on standing due to the very small size of its particles?

Colloid (correct)

Suspension

Heterogeneous mixture

Homogeneous mixture

What is the defining characteristic of an acid?

Turns blue litmus red (correct)

React with bases to produce just water

Tastes bitter in water

Has no effect on litmus paper

In the context of acids and bases, what does it mean for a compound to be ionisable?

It dissociates into ions when dissolved in water Signup and view all the answers

Which type of compound does not dissociate into ions in solution?

Covalent compounds Signup and view all the answers

What is the role of bases in household cleansers?

To remove oil from windows and floors Signup and view all the answers

What is the main characteristic of an acid according to the Arrhenius theory?

Donates H+ ions Signup and view all the answers

Which of the following is a characteristic of a Bronsted acid?

Accepts H+ ions Signup and view all the answers

What is the color change observed when blue litmus paper is exposed to an acid?

Blue to red Signup and view all the answers

Which of the following statements about indicators is true?

Methyl orange turns orange in basic solutions Signup and view all the answers

What is the role of OH- ions in a base according to the Arrhenius theory?

Donates OH- ions Signup and view all the answers

Why is the method of taste not recommended to identify acids and bases?

Tasting chemicals can be dangerous or corrosive Signup and view all the answers