1. Group II obtains hydrogen sulfide, a colorless gas with the smell of rotten eggs. It is produced through a chemical change and exhibits distinct characteristics due to its unique chemical composition.

    Group II obtains hydrogen sulfide, a colorless gas with the smell of rotten eggs. It is produced through a chemical change and exhibits distinct characteristics due to its unique chemical composition.

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  2. Performing the combustion test for hydrogen in class is not advised due to its flammability. Hydrogen reacts explosively with oxygen, posing a potential hazard in an educational setting. Safety concerns and the risk of accidents outweigh the educational benefits of demonstrating combustion.

    Performing the combustion test for hydrogen in class is not advised due to its flammability. Hydrogen reacts explosively with oxygen, posing a potential hazard in an educational setting. Safety concerns and the risk of accidents outweigh the educational benefits of demonstrating combustion.

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  3. A suspension is a heterogeneous mixture containing solid particles dispersed in a liquid or gas, where the particles are large enough to settle out over time and can be separated by filtration.

    A suspension is a heterogeneous mixture containing solid particles dispersed in a liquid or gas, where the particles are large enough to settle out over time and can be separated by filtration.

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  4. Metalloids, such as boron, silicon, and germanium, exhibit properties that lie between those of metals and nonmetals. They possess characteristics of both, making them valuable in various technological applications.

    Metalloids, such as boron, silicon, and germanium, exhibit properties that lie between those of metals and nonmetals. They possess characteristics of both, making them valuable in various technological applications.

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