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Jul 11, 2022 · Important Question for Class 10 Science Metals and Non-Metals PDF will help you in scoring more marks.. This consists of 1 mark Questions, 3 Mark Numericals Questions, 5 Marks Numerical Questions and previous year questions from Metals and Non-Metals Chapter.
Mar 29, 2021 · Chapter 3 of Class 10 Science Metals and nonmetals contains Properties of metals and non-metals; Reactivity series; Formation and properties of ionic compounds; Basic metallurgical processes; Corrosion and its prevention.
Aug 22, 2023 · CBSE Exam, class 10. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket
- 38 min
- 1.6M
- Sunlike study Science
- Physical Properties
- Chemical Properties
- Extraction of Metals and Non-Metals
Physical Properties of Metals
● Hard and have a high tensile strength – Carbon is the only non-metal with very high tensile strength. ● Solid at room temperature – One non-metal, bromine, is a liquid at room temperature. The other non-metals are solids at room temperature, including carbon and sulfur. ● Sonorous – Metals produce a typical ringing sound when hit by something. ● Good conductors of heat and electricity – Graphite is a good conductor of heat and electricity. ● Malleable, i.e., can be beaten into thin sheets ●...
Non-Metals
Nonmetals are those elements which do not exhibit the properties of metals.
Physical Properties of Non-metals
1. Occur as solids, liquids and gases at room temperature 2. Brittle 3. Non-malleable 4. Non-ductile 5. Non-sonorous 6. Bad conductors of heat and electricity
Chemical Properties of Metals
● Alkali metals (Li, Na, K, etc.) react vigorously with water and oxygen or air. ● Mg reacts with hot water. ● Al, Fe and Zn react with steam. ● Cu, Ag, Pt, and Au do not react with water or dilute acids.
Reaction of Metals with Oxygen
A metal oxide is formed when metals are burned in the air and react with oxygen in the air. Metal oxides are a type of basic material found in nature. They change the colour of red litmus to blue. To avoid reactions with oxygen, moisture, and carbon dioxide in the air, sodium and potassium metals are kept in kerosene oil. Metal + Oxygen→ Metal oxide (basic) ● Na and K are kept immersed in kerosene oil as they react vigorously with air and catch fire. 4K(s)+O2(g)→2K2O(s) (vigorous reaction) ●...
Basic Oxides of Metals
Metal oxides are crystalline solids that contain a metal cation and an oxide anion. They typically react with water to form bases or with acids to form salts. MO + H2O → M(OH)2(where M = group 2 metal). Thus, these compounds are often called basic oxides. Some metallic oxides get dissolved in water and form alkalis. Their aqueous solution turns red litmus blue. Na2O(s)+H2O(l)→2NaOH(aq) K2O(s)+H2O(l)→2KOH(aq)
Applications of Displacement Reaction
Uses of displacement reaction 1. Extraction of metals 2. Manufacturing of steel 3. Thermite reaction: Al(s)+Fe2O3(s) → Al2O3+Fe(molten) The thermite reaction is used in the welding of railway tracks, cracked machine parts, etc.
Occurrence of Metals
Most elements, especially metals, occur in nature in a combined state with other elements. All these compounds of metals are known as minerals. But out of them, only a few are viable sources of that metal. Such sources are called ores. Au, Pt – exists in the native or free state.
Extraction of Metals
The process of extracting metal ores buried deep underground is called Mining. The metal ores are found in the earth’s crust in varying abundance. The extraction of metals from ores is what allows us to use the minerals in the ground! The ores are very different from the finished metals that we see in buildings and bridges. Ores consist of the desired metal compound and the impurities and earthly substances called Gangue. Metals of high reactivity – Na, K, Mg, Al. Metals of medium reactivity...
- 56 min
- Chemical Reactions and Equations. Chemical reactions. Balanced chemical equation. Types of chemical reactions. Oxidation and reduction.
- Acids, Bases and Salts. Acids, bases and salts. Concept of pH scale. Preparation of Sodium Hydroxide. Uses of Sodium Hydroxide. Bleaching powder. Baking soda.
- Metals and Non-metals. Metals and nonmetals. Properties of metals and non-metals. Reactivity series. Formation and properties of ionic compounds. Basic metallurgical processes.
- Carbon and its Compounds. Carbon compounds. Covalent bonding in carbon compounds. Versatile nature of carbon. Homologous series. Nomenclature of carbon compounds containing functional groups (halogens, alcohol, ketones, aldehydes, alkanes and alkynes)
Get 100 percent accurate NCERT Solutions for Class 10 Chemistry explained by expert Chemistry teachers. We provide step by step solutions for the questions given in Class 10 Chemistry textbook as per CBSE Board guidelines from the latest NCERT book for Class 10 Chemistry. Get Notes prepared by Ex-IITIan for CBSE Class 10 Chemistry.
general physical properties of metals and non-metals in the class. You must have concluded that we cannot group elements according to their physical properties alone, as there are many exceptions. For example – (i) All metals except mercury exist as solids at room temperature. In Activity 3.5, you have observed that metals have high melting
