Acids, Bases and Salts
Telangana Board · Class 10 · Physical Sciences
Flashcards for Acids, Bases and Salts — Telangana Board Class 10 Physical Sciences. Quick Q&A cards covering key concepts, definitions, and formulas.
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What are acid-base indicators? Give two examples.
Answer
Acid-base indicators are dyes or mixtures of dyes that are used to detect the nature of a solution (acidic or basic). They change color in acidic or basic solutions. Examples: 1. Litmus - Red in acid…
What happens when an acid reacts with a metal? Write the general equation.
Answer
When an acid reacts with a metal, hydrogen gas is evolved along with the formation of a salt. General equation: Acid + Metal → Salt + Hydrogen gas Example: 2HCl + Zn → ZnCl₂ + H₂ The hydrogen gas c…
Define neutralization reaction with an example.
Answer
A neutralization reaction is the reaction between an acid and a base to form salt and water. General equation: Acid + Base → Salt + Water Example: HCl + NaOH → NaCl + H₂O (Hydrochloric acid + Sodium…
What is pH scale? What does pH value indicate?
Answer
pH scale is a scale for measuring hydrogen ion concentration in a solution. pH stands for 'Potenz' (German word for power). • pH scale ranges from 0-14 • pH = 7: Neutral solution • pH < 7: Acidic sol…
Why do acids conduct electricity in aqueous solution?
Answer
Acids conduct electricity in aqueous solution because they produce hydrogen ions (H⁺) when dissolved in water. HCl + H₂O → H₃O⁺ + Cl⁻ The presence of these ions (H₃O⁺ and Cl⁻) in solution allows ele…
What happens when acids react with metal carbonates? Give an example.
Answer
When acids react with metal carbonates, they produce salt, carbon dioxide gas, and water. General equation: Metal carbonate + Acid → Salt + Carbon dioxide + Water Example: Na₂CO₃ + 2HCl → 2NaCl + H₂…
Why do bases conduct electricity? What ions do they produce?
Answer
Bases conduct electricity in aqueous solution because they produce hydroxide ions (OH⁻) when dissolved in water. Examples: NaOH → Na⁺ + OH⁻ KOH → K⁺ + OH⁻ Mg(OH)₂ → Mg²⁺ + 2OH⁻ The presence of these…
What is the importance of pH in everyday life? Give three examples.
Answer
pH plays crucial roles in everyday life: 1. **Acid Rain**: pH < 5.6 damages aquatic life and plants 2. **Tooth Decay**: Starts when mouth pH < 5.5; bacteria produce acids from food particles 3. **Sto…
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