A. Na B. Fe C. Cr D. Hg 18. B. They generally have 5,6 or 7 electrons in their valence shells.They have tendency to form anion by gaining electrons. Name the following type of reaction :-Copper sulphate (CuSo 4) + Zinc (Zn) = Zinc Sulphate … 16. In Steudel's Chemistry of the non-metals (1977, preface) Nonmetals show more variability in their properties than do metals. Sodium Oxide and Potassium oxide. (d) Some non-metals are ductile. Answer: Gold and platinum. Which of the given metals are obtained by electrolysis of their chlorides in molten state ? Metals shows the property of malleability while non-metals are non-malleable. (c) Generally, metals are ductile. Can you suggest a reason for the loss in … But, in contrast to metals, these oxides are acidic in nature. However, there are exceptions. Most of the Non-metals dissolve in water and forms. The crust of the earth provides metals and it is a good source to procure metals. Phosphorous is kept in water to prevent … Activity 1. On the contrary, Non-metals are electronegative because they gain electrons and thus they are oxidising agents. Generally, non … (a) All metals are ductile. Study, observe and compare them with the properties metals and non- metal. When sulfur dioxide reacts with water it forms sulphurous acid. S + O2 → SO2. The metals are normally hard, … We hope the given MCQ Questions for Class 10 Science Metals and Non-Metals with Answers will help … The pseudo metals (groups 12 and 13, including boron) are said to behave more like true metals (groups 1 to 11) than non-metals. b. (a) 17. Introduction. Question 15. Metals are good conductor of heat and electricity while on … The best electrical conductor is: (a) gold (b) silver (c) … CLICK HERE to watch them Metals and Non-metals Elements are generally classified into metals and non-metals based on their properties. ZnO(s) + … The hybrid metals As, Sb, Bi, Te, Po, At — which other authors would call metalloids — partake about equally the properties of both. You can see various things around you. Some of the examples of non-metals are carbon, sulphur , iodine, oxygen, hydr ogen, etc. Metals and Non-Metals Class 10 MCQs Questions with Answers. Similarities - both are materials. Metal oxides are basic in nature beacase they react with water to form bases. Reaction with water: Non-metal + water → normally no reaction. (C) & (D) C. (A) & (C) D. (A) & (B) 19. Question 1. Sodium b. Potassium c. Calcium d. Magnesium Ans . Testing the nature of non metal: (i) Take a small amount of powdered sulphur in a deflagrating spoon and then heat it. Generally, metals are solid in nature. A native metal is a metal found in its metallic state naturally, either in … c. blue litmus to red because if is acidic in nature. Identify the metal or non- metal present in them which forms oxides with oxygen. Give an example of a metal which (i) can be easily cut with a knife. Introduction to Non metals. Gallium, Caesium 4. What chemical process is used for obtaining a metal from its oxide. SO2 + H2O → H2SO3. Sodium metal is stored in-a. • Except Graphite. Reaction with Water. Metals have high tensile strength while on the other hand nonmetals do not have tensile strength. Water b. Choose amphoteric oxides from the following: Na2O, ZnO, Al2O3, SO2. Sodium b. Potassium c. Calcium d. Magnesium Ans . 3. Graphite 5. losing electrons 6. Non-metals may occur as gases at room temperature. Do non-metals also have physical properties similar to … 7. (a) 17. 15. Chapter 3 - Metals and Non-Metals Formative Assessment Manual for Teachers 2. Non-metals do not displace Hydrogen from dilute acids. d. Red litmus to blue … Iodine 7. Which one of the given metals is found in liquid state at room temperature? Her mother gave an old gold jewellery to the goldsmith to polish. Explain. Density : Generally have high density and high melting point. NCERT Book for Class 8 Science Chapter 4 Materials: Metals and Non-Metals is available for reading or download on this page. ... As a metalloid the chemistry of silicon is largely covalent in nature, noting it can form alloys with metals such as iron and copper. Solution Ionic compounds dissolve in water because water is a polar compound, it decreases the electrostatic forces of attraction, resulting in free ions … Compounds of metals with non-metals tend to be ionic in nature. Hence non-metals do not displace hydrogen from dilute acids. The pseudo metals can be considered related to … 15. Which one of the following metal reacts vigorously with oxygen and water? Sonorous: Metals produce a sound on striking a hard surface. Water b. Next day, when they brought the jewellery back, they found that there was a slight loss in its weight. In the previous Class you have learnt that there are very few non-metals as compared to metals. Oxides of non metals are _____ in nature a. Question 4. On the other hand non-metals are electronegative in nature. Question 2. Basic b. Answer: (a) native state. Generally, oxides of non-metals are acidic in nature. (a) Na (b) Ca (c) Fe (d) Cu A. If metal is found in a free state in nature, it is called its : (a) native state (b) crust state (c) mineral state (d) none of these. • Except Sodium and Potassium. 14. Alcohol c. Kerosene d. Ether Ans . They are found in the solid, liquid and gaseous state. The metals can be distinguished from the non-metals on the basis of their chemical and physical properties. Note down their names in Table 4. Business; Finance; Banking; Education; General; … Digital NCERT Books Class 8 Science pdf are … asked Aug 13, 2019 in Class X Science by aditya23 ( -2,145 points) metals and non-metals 14. … Generally, non-metals do not react with water. Germanium. Oxides : … Reaction of … Answer: … They are not sonorous. (A) & (D) B. Mostly, the metals occur in nature in a combined state but sometimes they can also occur in the free state. Metals are generally malleable and ductile while non metals are not generally malleable and ductile and you can easily said that metals and non malleable and non ductile. Non-metals react with Hydrogen and forms Hydrides. Let us see how metals and non-metals react … 16. But non-metallic oxide is acidic or neutral in nature. Moreover, the oxides turn moist red litmus paper blue and blue reamins blue. Hydrogen 9. metallurgy 10. Non-metals being acceptor of electrons, cannot give electrons to the hydrogen ions of acid to reduce them to hydrogen gas. Students who are in Class 8 or preparing for any exam which is based on Class 8 Science can refer NCERT Science Book for their preparation. Acidic or Neutral oxides. In today's Oxides of non metals are _____ in nature a. 8. 9. Name two metals which are found in nature in the free state. 2. (Non-metals do not react with water). The property of metals by which they can be beaten into thin sheets is known as malleability.. Lead, Mercury 3. Na2O + H2O = NaOH + H2 Non-metallic oxides are acidic in nature because they turn moist blue litmus paper red and red remains red. Lustre: Non-metals usually have no shine since they have no loosely attached electrons which are responsible for lustre. Occurence of Metals . Sodium metal is stored in-a. The main difference between metals and non-metals is Metals are electropositive in nature as they easily lose electrons, so they are reducing agents. Thus Materials is a set and metals and non-metals are sub-sets of that set. Both may occur in solid and liquid form. Out of the non-metals, Diamond and iodine have lustrous nature. (b) All non-metals are ductile. Acidic c. Neutral d. All of these Ans . Which … Non- metal, solution of which is used as an antiseptic on wounds. Technically the halogens and noble gases are nonmetals, but the nonmetal … Diamond 11. Sodium, Potassium 12. Have low density and low melting point. Q 1. Red litmus to blue because it is acidic in nature. Which one of the following metal reacts vigorously with oxygen and water? Metals and Non Metals | CBSE Class 10 Chemistry | Science Chapter 3 NCERT Solutions | Sprint X Pre-Board 2020 | Vedantu Class 9 and 10. (c) 16. a) Potassium Dichromate b) Potassium permanganate c) Sodium chloride d) Copper Sulphate 7. Reaction of Metals with Oxygen Metal + Oxygen Metal Oxide This is Basic in nature Example Magnesium + Oxygen (Mg) (O2) Magnesium Oxide (MgO) This Magnesium oxide is Basic in nature It turns red litmus paper blue Reaction of Iron with Moist air Iron + Oxygen + Water Iron Oxide (Fe) (O2) (H2O) (Fe2O3) Air … The non-metals ar e either solids or gases except bromine which is a liquid. They are soft in nature; When we hit non- metals, they do not produce tinkling sound. We would also know in detail how metals occur in nature, different ways to extract them, how they … Magnesium 8. Generally, oxides of non-metals are acidic in nature. Metals are malleable while non-metals are […] Login … 1. a. Metals are generally found in solid-state but non-metals exist in all the 3 states of matter i.e., solid, liquid and gas. Non-metals: Non-metals react with metals and gain electrons and forms cations. For example, zinc oxide is reduced to metallic zinc by heating with carbon. Whereas non-metals are electronegative as they generally accept electrons. Acidic c. Neutral d. All of these Ans . Testing Nature of Rust (b) For Non-metals: Generally, non-metals also produce oxides when reacted with oxygen. Nature of metal oxide is : a) Basic b) Acidic c) Neutral d) None of these 6. Most of the materials present around us is grouped widely into metals and non metals. (ii) is a liquid at room temperature. Which … (b) 15. (ii) As soon as sulphur starts … Lustrous Iodine: An exception for Lustre[8] Electrical and Thermal Conductivity: Non-metals, in general, are … In this unit, we would come across their physical and chemical properties, reactivity series of metals, ionic bonds, and ionic compounds. The element found in free state in nature is : (a) copper (b) gold (c) silver (d) all these. Blue litmus to red because it is basic in nature. The property of metal by which it can be drawn into wires is known as ductility.. Solution Amphoteric oxides = ZnO, Al2O3Q 2. Ionic compounds dissolve in water. (c) 16. Cl(g) + e Cl (g) 2,8,7 2,8,8 27.2.1 Chemical Properties of Metals Let us now understand some common chemical reactions of metals. Non-metals are poor conductor of heat and electricity. a. Metals can be drawn into thin wires because: (a) they are sonorous (b) they are malleable (c) they are ductile (d) they are dense. a. Occurrence of Metals. (b) 15. C + O2 → CO2 (carbon dioxide, which is an acidic oxide) When sulfur reacts with oxygen, we get sulfur dioxide. 1. metals, non-metals 2. Answer: Reduction process is used for obtaining a metal from its oxide. Recall the name of some of the laboratory acids and bases you have read in Class VII. Alcohol c. Kerosene d. Ether Ans . Question 3. Physical properties of metals and non-metals: Malleability: Property of a substance due to which it can be beaten into thin sheet. But some non-metals like phosphorous which is very reactive in air. Now, classify them interms of metals and non- metals … Basic b. The nonmetals are located on the upper right side of the periodic table.Nonmetals are separated from metals by a line that cuts diagonally through the region of the periodic table containing elements with partially filled p orbitals. 4. The oxides of non-metals are acidic in nature and turn blue litmus to red or neutral. The common oxide of silicon (SiO 2) is weakly acidic. 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