How can we test for carbon dioxide gas?
Carbon dioxide turns limewater milky due to the formation of calcium carbonate.
What is the role of indicators in identifying acids and bases?
Indicators change color in the presence of an acid or a base, helping to identify whether a solution is acidic or basic.
Why do acids react with metals to produce hydrogen gas?
Acids donate hydrogen ions (H⁺) in water. When they react with metals, the hydrogen ions are reduced to hydrogen gas.
How do antacids work?
Antacids neutralize excess stomach acid by reacting with it to form salt and water.
What are the applications of pH in everyday life?
pH is used to maintain soil quality, ensure safe drinking water, and manage health through the proper use of antacids.
Why do acids turn blue litmus paper red?
Acids release hydrogen ions (H⁺), which react with litmus, causing it to turn red.
What is a neutralization reaction?
A neutralization reaction is when an acid reacts with a base to form salt and water. Example: HCl + NaOH → NaCl + H₂O
What is the Tyndall effect, and does it occur in suspensions?
The Tyndall effect is the scattering of light by particles in a mixture. It occurs in suspensions due to the larger size of their particles, which scatter light.
Can suspensions be separated by filtration?
Yes, the solid particles in a suspension can be separated by filtration, unlike solutions where the solute is dissolved.
How is a suspension different from a solution?
In a suspension, the particles are large and settle over time, while in a solution, the solute is completely dissolved and does not settle out.
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