To determine which of the given substances are mixtures, we need to understand what a mixture is. A mixture is a combination of two or more substances that are not chemically bonded together and can be separated by physical means.

1. Water: Water is a pure substance, not a mixture. It consists of two hydrogen atoms bonded to one oxygen atom, forming a chemical compound.

2. Sherbet: Sherbet is a mixture. It typically contains a combination of sugar, fruit flavors, and other ingredients. These components are not chemically bonded and can be separated.

3. Iron: Iron is a pure substance, not a mixture. It is an element with its own unique properties and cannot be separated into simpler substances.

4. Steel: Steel is an alloy, which is a type of mixture. It is made by combining iron with carbon and other elements. The different elements in steel are not chemically bonded and can be separated.

5. Coal: Coal is a mixture. It is composed of various organic compounds, minerals, and impurities. These components can be separated through processes like heating or combustion.

6. Air: Air is a mixture. It is composed of different gases, primarily nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. These gases are not chemically bonded and can be separated.

7. Salt: Salt is a compound, not a mixture. It is made up of sodium and chloride ions that are chemically bonded together.

8. Copper: Copper is a pure substance, not a mixture. It is an element with its own unique properties and cannot be separated into simpler substances.

9. Brass: Brass is an alloy, which is a type of mixture. It is made by combining copper and zinc. The different elements in brass are not chemically bonded and can be separated.

10. Soil: Soil is a mixture. It consists of a combination of organic matter, minerals, water, and air. These components are not chemically bonded and can be separated.

In summary, the mixtures among the given substances are sherbet, steel, coal, air, and soil.

Question

To determine which of the given substances are mixtures, we need to understand what a mixture is. A mixture is a combination of two or more substances that are not chemically bonded together and can be separated by physical means.

1. Water: Water is a pure substance, not a mixture. It consists of two hydrogen atoms bonded to one oxygen atom, forming a chemical compound.

2. Sherbet: Sherbet is a mixture. It typically contains a combination of sugar, fruit flavors, and other ingredients. These components are not chemically bonded and can be separated.

3. Iron: Iron is a pure substance, not a mixture. It is an element with its own unique properties and cannot be separated into simpler substances.

4. Steel: Steel is an alloy, which is a type of mixture. It is made by combining iron with carbon and other elements. The different elements in steel are not chemically bonded and can be separated.

5. Coal: Coal is a mixture. It is composed of various organic compounds, minerals, and impurities. These components can be separated through processes like heating or combustion.

6. Air: Air is a mixture. It is composed of different gases, primarily nitrogen, oxygen, carbon dioxide, and trace amounts of other gases. These gases are not chemically bonded and can be separated.

7. Salt: Salt is a compound, not a mixture. It is made up of sodium and chloride ions that are chemically bonded together.

8. Copper: Copper is a pure substance, not a mixture. It is an element with its own unique properties and cannot be separated into simpler substances.

9. Brass: Brass is an alloy, which is a type of mixture. It is made by combining copper and zinc. The different elements in brass are not chemically bonded and can be separated.

10. Soil: Soil is a mixture. It consists of a combination of organic matter, minerals, water, and air. These components are not chemically bonded and can be separated.

In summary, the mixtures among the given substances are sherbet, steel, coal, air, and soil.

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