12 Questions
What is one common property of all acids?
H+ ions
Which type of indicator is turmeric?
Natural indicator
What is the product when base reacts with a metal?
Salt + Hydrogen gas
In the reaction between acid and base, what is formed?
Salt + Water
Which property distinguishes bases from acids?
Bitter taste
What type of salt is produced when a weak acid reacts with a strong base?
Basic salt
What is the correct explanation for the exothermic nature of dissolving acids or bases in water?
The process releases heat when acids or bases are added to water.
What ions do acids produce when dissolved in water?
H+ ions
Which statement about the pH scale is accurate?
pH of 7 represents a neutral solution.
What is the pH range within which our bodies normally function?
7-7.8
Which substance is commonly used in the textile industry for bleaching cotton and linen?
Bleaching Powder (CaOCl2)
Which compound is used by doctors for supporting fractured bones?
Plaster of Paris (Calcium sulphate hemihydrates)
Study Notes
Acids and Bases
- All acids have the common property of donating a proton (H+ ion).
- Turmeric is a natural indicator, and it changes color in the presence of acids or bases.
Reaction between Acids and Bases
- When a base reacts with a metal, it produces hydrogen gas.
- The reaction between an acid and a base forms a salt and water.
Properties of Bases
- Bases are distinguished from acids by their ability to accept a proton (H+ ion).
Salt Formation
- When a weak acid reacts with a strong base, a basic salt is produced.
Dissolving Acids and Bases
- The exothermic nature of dissolving acids or bases in water is due to the release of heat energy during the process.
Acids in Water
- Acids produce H+ ions when dissolved in water.
pH Scale
- The pH scale is a logarithmic scale that measures the concentration of H+ ions in a solution.
- A pH range of 7-8 accurately represents the pH scale.
Human Body and pH
- The human body normally functions within a pH range of 7.35-7.45.
Applications of Chemicals
- Sodium hypochlorite is commonly used in the textile industry for bleaching cotton and linen.
- Plaster of Paris (calcium sulfate hemihydrate) is a compound used by doctors for supporting fractured bones.
Test your knowledge on acids, bases, salts, and indicators. Learn about the properties of acids and bases, the formation of salts, and the different types of natural and synthetic indicators used in chemistry.
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