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Mind Map: Metals & Non-metals | Science Class 10

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FAQs on Mind Map: Metals & Non-metals - Science Class 10

1. What are the main differences between metals and non-metals?
Ans.Metals are generally good conductors of heat and electricity, have a shiny appearance, and are malleable and ductile. They tend to lose electrons during chemical reactions and form positive ions. Non-metals, on the other hand, are poor conductors, have a dull appearance, and are usually brittle in solid form. They tend to gain electrons during reactions, forming negative ions. Additionally, metals are usually solid at room temperature (except mercury), while non-metals can be gases, liquids, or solids.
2. How do metals and non-metals react with oxygen?
Ans.Metals typically react with oxygen to form metal oxides, which are usually basic in nature. For instance, when magnesium (Mg) burns in oxygen, it forms magnesium oxide (MgO). In contrast, non-metals react with oxygen to form non-metal oxides, which are generally acidic or neutral. For example, carbon (C) when burned in oxygen forms carbon dioxide (CO₂), which is acidic in nature. This difference in reaction with oxygen is crucial in understanding their chemical properties.
3. What are some common uses of metals and non-metals in daily life?
Ans.Metals are widely used in construction, manufacturing, and technology. For instance, iron is used for building structures, aluminum is used in packaging and transportation, and copper is used in electrical wiring. Non-metals also have significant applications; for example, sulfur is used in fertilizers, phosphorus is essential for plant growth, and chlorine is used in water purification. Understanding these applications helps highlight the importance of both categories in everyday life.
4. Can you give examples of metals and non-metals along with their properties?
Ans.Examples of metals include iron (Fe), which is strong and malleable, and copper (Cu), which is an excellent conductor of electricity. Non-metals include oxygen (O), which is essential for respiration and a gas at room temperature, and sulfur (S), which is a solid with a distinct yellow color and is used in various chemical processes. These examples help illustrate the distinct characteristics of metals and non-metals.
5. What is the significance of the periodic table in understanding metals and non-metals?
Ans.The periodic table organizes elements based on their atomic number and properties. Metals are typically found on the left side and center of the table, while non-metals are located on the right side. This arrangement helps in predicting the behavior of elements, understanding trends in reactivity, and identifying the characteristics of metals and non-metals. The periodic table serves as a fundamental tool for studying chemistry and understanding the relationships between different elements.
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