Podcast
Questions and Answers
What is the characteristic property of non-metals?
What is the characteristic property of non-metals?
Which element is a metalloid?
Which element is a metalloid?
Which of the following is a property of metals?
Which of the following is a property of metals?
What is the pH of a neutral solution?
What is the pH of a neutral solution?
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Which of the following is a strong acid?
Which of the following is a strong acid?
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What happens when a strong base reacts with an ammonium salt?
What happens when a strong base reacts with an ammonium salt?
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When an acid reacts with a metal, which gas is generally evolved?
When an acid reacts with a metal, which gas is generally evolved?
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What happens to the pH of a solution when a small quantity of strong acid is added to it?
What happens to the pH of a solution when a small quantity of strong acid is added to it?
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Which substance would NOT change the color of red litmus paper?
Which substance would NOT change the color of red litmus paper?
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Study Notes
Properties of Non-Metals
- Non-metals typically exhibit poor conductivity, both for heat and electricity.
- They often have high ionization energies and electronegativities compared to metals.
- Non-metals tend to form covalent bonds and can exist in various states at room temperature (solid, liquid, gas).
Metalloids
- Boron is a commonly cited example of a metalloid, possessing properties intermediate between metals and non-metals.
Properties of Metals
- Metals are usually good conductors of heat and electricity.
- They are malleable (can be hammered or pressed into thin sheets) and ductile (can be drawn into wires).
- Metals typically have high densities and melting points.
pH of Neutral Solutions
- The pH of a neutral solution is 7, indicating a balance between hydrogen ions (H⁺) and hydroxide ions (OH⁻).
Strong Acids
- Hydrochloric acid (HCl) is an example of a strong acid, completely dissociating in solution.
Reaction of Strong Bases with Ammonium Salts
- When a strong base reacts with an ammonium salt, ammonia gas (NH₃) is released.
Gas Evolved in Acid-Metal Reactions
- Hydrogen gas (H₂) is typically evolved when an acid reacts with a metal.
pH Changes with Strong Acid Addition
- Adding a small quantity of a strong acid to a solution decreases its pH, making the solution more acidic.
Red Litmus Paper Reaction
- Substances that do not react with acids or bases, such as pure water, would not change the color of red litmus paper.
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Description
Test your knowledge of the properties of metals and non-metals with this quiz. Explore the characteristics and identification of metalloids while answering questions on the distinguishing features of these elements.
