You will notice that sodium reacts vigorously. Answer: But some jewellers mix a large quantity of copper and silver in gold to earn more profit. How are metals useful to us? Answer: Answer: Explain. Introduction to Bases. Non-metal, Question 20. Will you observe any colour on adding copper turn-ing in it? Free Online CBSE Class Notes, NCERT Solutions, Self Study material for Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and Class 12 Generally, metallic oxides are basic and non-metallic oxides are acidic in nature. Compare between metals and non-metals on the basis of their chemical properties. Answer: Metals react with dilute mineral acid to liberate hydrogen. (c) Potassium Do it yourself. Answer: (v) Displacement reactions: More reactive metals displace less reactive metals. Aluminium is more reactive than copper. (d) aluminium, Question 15. Following is the general equation for such metals. Answer: 7. (c) both metals and non-metals (d) none of these, Question 16. A salt is a general chemical term for any ionic compound formed from an acid and a base. (d) all of these, Question 2. 20. Answer: (c) Aluminium Lead is used in making electrodes and batteries. Answer: (b) basic (c) Oxidizing agents It oxidizes the H 2 produced to water and self-reduced to oxides of nitrogen as (N 2 O, No, No 2). 11. Non-metal like iodine is used in the purple coloured solution applied on wounds. Question 15. 3. Copper, Question 18. 2. Zinc asked Oct 25, 2017 in Class X Science by aditya23 ( … 1. Sodium, potassium Blue colour solution of copper sulphate has changed to green colour of ferrous sulphate. Answer: Question 2. Lustre, Question 5. Which of the following is a non-metal? 13. A strip of copper placed into a zinc sulphate solution will not produce an appreciable reaction, because copper is below zinc on the series and can’t displace zinc ions from solution. Zn + H 2 SO 4 ⇨ ZnSO 4 + H 2. For example, aluminium and copper are drawn into wires and used for electrical and different purposes. 6. acidic Answer: Visit the following websites and enjoy the quiz on metals and non-metals: Answer: (b) Take a pinch of sodium with a forceps and place in a beaker containing water. (c) What value of shopkeeper’s are shown here? (d) gold, Question 6. 18. True or False Thin sheets can be obtained by this process. Difference between metals and non-metals on the basis of their chemical properties. The rests you should try to do yourself. _____ reacts with cold water vigorously. No, because copper is less reactive than zinc and will not be able to displace zinc from its salt solution. Acids combined with metal carbonates produce a salt, water and carbon dioxide. Due to which property a bell rings? Question 10. (c) non-malleable Iodine. Sodium, III. 5. Bases produces hydroxide ions. Name the metal and non-metal which occur in liquid state. But unlike the reaction between acids and bases, we do not get water. Answer: Match the following A red powdery deposit of copper sulphate was found on the iron container. _____ and _____ are kept in kerosene to avoid explosion. The metals like Cu,Au,Ag are less reactive than hydrogen.They do not displace hydrogen from dilute acids. 8. Metals are malleable and give thin sheets after hammering whereas non-metals are brittle and give no sheets. 15. 5. (c) Can you suggest other alternatives to mercury thermometers? Copper, a chemical element that is a reddish, extremely ductile metal and an excellent conductor of electricity and heat. 1. (d) none of these, Question 19. (b) Oxygen Question 7. 14. Which metal is less reactive: Copper or zinc? (c) iodine Non-metals cannot be converted into wires. (b) a less reactive metal displaces a more reactive metal. Metals are ductile and can be drawn into wires whereas non-metals are non-ductile and can’t be drawn into wires. Which is the hardest substance? (ii)They form negative ions and are good oxidising agents. 9. sodium, potassium Metals like gold, silver and platinum are used to make jewellery and other decorating items. (c) An index card is used for recording and storing small sizes of discrete data. A doctor prescribed a tablet to a patient suffering from iron deficiency. 10. (c) the reactions of dilute acids with metals and how these relate to the metals' position in the reactivity series; England. Graphite is a good conductor of electricity. We breathe oxygen which is the basis of life of all living things including human beings. Give examples of metalloids. 10. Iron (Fe) and copper (Cu) get rusted when react in presence of oxygen and water (moist air). They also change the color of red litmus paper to blue. (b) Metals are good conductors of heat and electricity. If it get into the food chain, it leads to mercury poisoning. That is why it is used as wrapping materials for food items. (b) non-oxidizing acids such as dilute hydrochloric acid or dilute sulfuric acid (in which hydrogen is displaced from acid to produce hydrogen gas). Generally non-metals are non-lustrous. Also write the equation. Why does calcium float in water? Activity to arrange sodium, magnesium and copper in the order of their decreasing reactivity: Question 1. Without it, no living beings can exist alive on this earth. Question 15. 6. What are the physical properties of non-metals? (i) 16. (c) Phosphorus Let's first look at the acid-catalyzed hydration of an alkyne. Answer: True Acids and Bases React with Metals. Question 2. 8. What happens when metals react with acids. Some metals like sodium, potassium react vigorously with water. (b) Magnesium To access more topics go to the Combined Science Notes page. Reactions of metals with dilute acids When a metal reacts with a dilute acid, a salt and hydrogen are formed. Question 25. video from: Noel Pauller Acids react with most metals and, when they do, a salt is produced. For example, oxygen, hydrogen, sulphur, etc. How do metals and non-metals react with bases? (a) 26. Question 1. 4. Active metals react with dilute acid to give hydrogen gas and salt Ask for details ; Follow Report by Lillyvince5637 08.10.2019 Log in to add a comment What do you need to know? Suggest an activity to arrange sodium, magnesium and copper in the order of their decreasing reactivity. Question 1. 6. (b) hard Add 5 cm 3 of dilute sulfuric acid to test tube 3. He observed certain changes after few hours. 2. These metals are placed above hydrogen in the reactivity series. What happens when metals react with water? Magnesium reacts very slowly with cold water. Some metals like potassium and sodium react vigorously with oxygen. Which of the following metal is stored in kerosene? Which of the following metals are soft enough to be even cut with a knife? Answer: Reactivity series is an arrangement of metals in decreasing order of their reactivity from highest to lowest. Question 3. Fill in the Blanks Metals are Answer: (iii) Reaction with acids: Metals react with acid to form their salts followed by evolution of hydrogen gas. they want to lose them to make them stable like noble gases. Whose oxides are acidic: Metal or non-metal? 13. Non-metals react with dilute acids to produce a gas which burns with a pop sound. Answer: GCSE. What are non-metals? Physical properties of metals are: Question 4. Phosphorus is kept in water. Due to their thermal and electrical conductivity, metals are use to make utensils, cooking vessels, wires and appliances. (c) Lithium (a) Gold The locations of the deposits of these metals may be shown on the map of India. Zn + CuSO4 → ZnSO4 + Cu. Zn + 2HCl(dil.) It doesn’t react with warm water also. Non-metals Metals react with water. 11. Which non-metal does conduct heat and electricity? Prepare Index Cards for any four metals and four non-metals. Metal oxides are Two interpretations of implication in categorical logic? ... Metal oxides as in this case MnO2 are soluble to some extent (c) copper Question 1. It is cheaper than other malleable metals and does not react with food items. Answer: The tablet does not look like iron. Answer: Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride. Like metals, non-metals also play an important role in our lives. Mark ‘T’ if the statement is true and ‘F’ if it is false. Copper, Question 17. In instances where the nitric acid is dilute, nitrogen monoxide is formed, but as soon as this is exposed to atmospheric oxygen, it is transformed into nitrogen dioxide. What happens when [KVS 2008] (b) or A metal activity series places metals in order of relative reactivity, from most reactive to least reactive: False ZnCl 2 + H 2 Exception: Nitric acid (HN0 3) They do not react with dilute acids and hence do not displace hydrogen from acid. Name one non-metal which is lustrous. Question 3. In displacement reactions Answer: The metal found in liquid state is chemistry.about.com/library/weekly/bl050303a.htm, chemistry.about.com/od/testsquizzes/Chemistry_Tests_Quizzes.htm, www.corrosionsource.com/handbook/periodic/metals.htm. But most of them do this on ignition. The iron container was found to be corroded from many places. Metals usually displace hydrogen from dilute acids. (iv) Reaction with bases: Most of the metals do not react with bases. Name some common metals. Oxygen (a) metals 2. non-metal As copper is less reactive than hydrogen, therefore it will not liberate hydrogen gas from the acids like HCl, HNO 3 , … 7. basic What are the differences between metals and non-metals? When acids dissolve in water, they produce hydrogen ions. Answer: 4. (b) Sulphur NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12. Question 5. What happens when metals react with oxygen? The equation is Acids produce carbon dioxide when reacted with carbonates. Reaction of zinc with dilute sulphuric acid: Zinc sulphate and hydrogen gas are formed when zinc reacts with dilute sulphuric acid. The mineral acids include the bench acids—hydrochloric acid, sulfuric acid, and nitric acid—so-called because they are the acids most commonly used in a laboratory setting. The alu­minum pow­der burns, form­ing ox­ide. Name the gas evolved when sodium hydrogen carbonate is made to react with dilute hydrochloric acid. Generally, non-metals do not react with acids. Metal D reacts with hot water, but not cold water. (c) sonorous True (c) acidic When a copper vessel is exposed to moist air for long, it acquires a dull green coating. Question 9. Aluminium, Question 15. Name one metal which does not react with dilute hydrochloric acid. 10. Most of the metals do not react with bases. Answer: Lithium's reactions are often rather like those of the Group 2 metals. All the gases are non-metals. Take small pieces of copper turnings and add warm water to it. Why some metals displace other metals from their solution? Answer: You, can do it yourself for more knowledge about metals and non-metals. All of these metals react vigorously or even explosively with cold water. Ask your question. Non-metals do not react with water. The metals occupying the higher positions in the activity series are more reactive in displacing the other metals lying below it from the solutions of their salts. Generally, non-metals do not react with acids. Zn + 2HCl – Zncl 2 – H 2 - Hydrogen gas is not evolved, when a metal reacts with HNO 3 because it is a strong. e.g. The pH scale ranges from zero to 14, with a pH of 7 being neutral, a pH less than 7 being acidic, and a pH greater than 7 being alkaline. (b) do not react with water Some metals like gold, copper, silver, etc., do not liberate hydrogen gas with acids. Basic solution turns red litmus into blue. Which of the following non-metals are used in fertilisers? These do not react with water or dilute acids. 15. Answer: Question 12. A metal activity series places metals in order of relative reactivity, from most reactive to least reactive: There are some metals like copper, silver, gold and platinum that do not liberate hydrogen with acids. How do metals and non-metals react with acids? 15. 1. The activity series is a useful guide for predicting the products of metal displacement reactions. Non-ipetals metals have 1,2,3 (or so) valence electrons in their outer shells. 8. Activities and Projects Magnesium forms _____ oxides. (a) 3. Ram stored copper sulphate solution in a container made of iron. That is why metals are used in ringing bells. ... tend to darken with exposure to air (forming Mn(III) species), a dash of H2O2 cleans this up. Antimony, arsenic, silicon, boron, etc. Explain with examples. Answer: Sometimes some complex reactions take place between non-metals and bases. Malleability, Question 7. Add 5 cm 3 of dilute sulfuric acid to test tube 1. (a) mercury Non-metal like chlorine is used in water purification process. 1. OCR Combined science A: Gateway. 14. They, generally, do not react with water. What happen when a copper vessel is exposed to moist air for long? (f) Answer: (a) Sodium Metals react with acids to form respective salts along with evolution of hydrogen gas that burns with a pop sound. (a) Generally, non-metals react with acids. Mercury is largely used in thermometers to measure the temperature. ... Metals do not react with hydrogen but non-metals react with hydrogen to form hydrides. The equation are as follows: Question 3. Acid + Metal Word Equations Chemistry Tutorial Key Concepts. What is reactivity series? (b) Copper, aluminium, iron, silver, gold, etc. (a) Let's look at a reaction, an actual reaction for the formation of epoxide, and then we'll talk about how to form a diol from that. Acid's share certain properties (turn litmus paper red, react with some metals) because of the presence of hydrogen ions. This green material is a mixture of copper hydroxide [Cu(OH)2] and copper carbonate (CuC03). The general equation for this process can be represented as Metal + Acid → Metal salt + Hydrogen gas However, all metals will not react with acids. (c), II. A chemical reaction in which a more reactive metal displaces a less reactive metal is called displacement , reaction. Aluminium oxide reacts in the following manner with acids and bases – Al 2 O 3 + 6HCl → 2AlCl 3 + 3H 2 O Al 2 O 3 + 2NaOH → 2NaAlO 2 + H 2 O (Sodium aluminate) Most metal oxides are insoluble in water but some of these dissolve It is a very dangerous metal as its density is very high. Answer: 8. (b) What standard you must see on gold ornaments? or It has equal masses of various elements in the reactants and products. Thus, the list shows 14 metals that will displace hydrogen from acids. 4. Answer: Explain chemical properties of metals with examples. (c) Digital thermometer and spirit thermometer. Mineral Acids . Answer: 1. If gold becomes reactive like copper then its use in ornaments will decline. The activity series for these metals is: … In acidic water, the negative fatty acid ions become fatty acids. Can you tell what changes did he observed? 12. mercury | EduRev Class 10 Question is disucussed on EduRev Study Group by 115 Class 10 Students. What happens when magnesium is burnt in air? (e) Ductility is one of the properties of metals due to which they can be drawn into wires. Sonority, Question 11. Like silver, mercury reacts with atmospheric hydrogen sulfide. Metals produce their hydroxides or oxides and hydrogen. Mercury (metal), bromine (non-metal). Observe the brightness of the lighting bulb. For example, Types of Reactions : Metal carbonates with dilute acid Metals carbonates will react with dilute acids to give salt, water and carbon dioxide gas. When a magnesium ribbon is heated in presence of air, it burns with a white dazzling flame and a white powdery magnesium oxide is formed. Acids and bases react chemically with each other to form salts. 10. Answer: This met­al also in­ter­acts ac­tive­ly with many acids. 3. (c) generally solids Metal A reacts slowly with cold water, while metal B reacts vigorously with cold water. (a) react with water 4. For example. Aluminium is a metal and hence possesses malleability property. State whether the given statements are true or false. (d) sodium, Question 14. (d) all of these, Question 3. Question 16. (b) Diamond Question 2. Example: Zinc metal reacts with dilute sulphuric acid to form zinc sulphate and hydrogen gas. State the property of non-metals due to which phosphorus is kept in water. (a) We must see the carat of gold jewellery, current price and BIS hallmark on it. Question 7. These metal oxides and their hydroxides neutralise acids but do not react with bases. They follow a simple replacement reaction and any metal which is above hydrogen in the reactivity series will replace it and create its own compound. So our end result is to form a carboxylic acid and our epoxide. 5. In which form are the deposits found? So if we start with cyclohexene-- let's go ahead and draw cyclohexene in here. Just like in the analogous reaction of alkenes, the new proton goes to the least substituted position, to give the most substituted carbocation. True (h) Question 5. 2. Question 1. What is a metal? (c) Some shopkeeper’s are greedy, mean, cheater and money minder. Name the property due to which metals can be beaten into thin sheets. Explain with suitable examples the chemical properties of non-metals. 4. acidic Chlorine is not a non-metal. The … (c) Silica Metals below hydrogen on the reactivity series will not react with dilute acids. Copper is below hydrogen in the reactivity series of metals, so it is unable to displace hydrogen from sulphuric acid. Metals also react with dilute acids such as. Make sure they are in contact with the zinc. 10. high How do metals and non-metals react with water? False Metals are good conductors of heat and electricity while non-metals are poor conductors. Faces share certain properties (turn litmus blue, do not react with metals) because of the presence of hydroxide ions. For example, aluminium, copper, zinc, iron, etc. How¬ever, sometimes some complex reactions take place between non-metals and bases. (c) Barium sulphate does not dissolve in hydrochloric acid. 8. (a) shiny 7. The process is explained here for your help. Many metals including alkali metals, alkali earth metals, chromium, nickel and zinc react with dilute hydrochloric acid. (b) Potassium non-metals have 4, 5,6,7 valence electrons and want to add them. The card should have information like name of metal/non-metal; its physical properties, chemical properties and its uses. These acids are so strong that they aren’t even considered conventional acids; … They form a salt with the acid. False (i) Reaction with oxygen or air: Metals react with oxygen to form basic oxides. (d) Siolver, Question 4. The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is _____. (ii) Dilute sulphuric acid, if added to a solution of barium chloride, forms a white precipitate of barium sulphate. 25. Name two metals which do not react with oxygen even at high temperature. (d) Metals react with acids to produce hydrogen gas. acids (dilute or concentrated) are mostly composed of non-metals (with some exceptions), and, therefore, also want to add electrons. Answer: 14. 11. (b) Phosphorus Zn + H 2 SO 4 ⇨ ZnSO 4 + H 2. In general an acid reacts with a metal to produce a salt and hydrogen gas. it has to do with the number and placement of valence electrons. (a) Non-metals are Question 2. The physical properties of non-metals are: Question 5. (c) Graphite Bases are substances that substances that are slippery to touch when in aqueous form. 25. •acids react with CO₃²⁻ to produce CO₂ •acids react with some metals to produce H ... classical properties of bases •bitter taste •neutralize acids •form precipitates when added to solutions of most metal ions •liquid solutions of bases feel slipper or soapy. In a re­ac­tion with hy­drochlo­ric acid, re­lease of hy­dro­gen is ob­served. Answer: The equation are as follows: There are some metals like copper, silver, gold and platinum that do not liberate hydrogen with acids. Name two metals which are soft enough to be cut. basic behaviour . (a) generally gases 4. (b) Why mercury is used in thermometers? 1)Magnesium metal react with dilute hydrochloric acid to form magnesium chloride and hydrogen gas. How are non-metals useful to us? Magnesium reacts with warm water to form magnesium oxide and hydrogen gas. Ans . 6. The reaction is as follows: Question 11. CopperCopper, gold and silver are known as noble metals. For example, an acid reacts with a metal hydroxide to also form a salt and metal. Metalloids possess the properties of Metal, Question 19. Give one example. bronsted-lowry acids vs. bases. This method is used in laboratory to produce hydrogen gas. Generally, non-metals do not react with bases. What happens when dilute sulphuric acid is poured on a copper plate? 13. Non-metals react with water to form a gas which burns with a ‘pop’ sound. Due to this property, they can produce ringing sounds. Fluoroantimonic acid is the world’s strongest acid, proudly standing on the pedestal slightly above carborane. Choose the correct option. Acids react with metals and form hydrogen gas. Some noble metals like gold, silver and platinum do not react with oxygen. or (c) both (a) and (b) To prepare dilute hydrochloric acid solution, slowly and carefully add approximately 100 ml concentrated hydrochloric acid ... An acid will react with a metal to form a salt and hydrogen gas. Answer: Because of this, the metals that react with this acid usually do not form hydrogen gas, but oxides of nitrogen instead. Oxidising/ reducing. 7. Answer: The acid and base neutralize each other, so the solution will be neutral (pH=7) and the ions that are formed will not react with the water. With the help of equations, explain the reaction of non-metals with oxygen. 6. 4. Sulphur is also used in preparing skin medicines and making ointment due to its fungicidal properties. It will react with hydrochloric acid to form manganese chloride, chlorine and water. Which non-metal is used in making glass? What happens when a magnesium ribbon is heated in presence of air? Answer: (d) All of these, Question 17. Answer: True False We must handle the equipments carefully and firmly. Metals have sonority. The equa­tion of the re­ac­tion is: 2Al + 6HCl = 2Al­Cl₃ + 3H₂ (b) Mercury is a good conductor of heat. Sulphuric acid to liberate sulphur dioxide gas as per the equation — Hope it helped ! Dilute Acids A dilute acid is … If you are hard set on dissolving MnO2 per se, you might be able to find a salt which can. (b) Question 15. Metal compound A reacts with dilute hydrochloric acid to produce effervescence. Which metal is more reactive: Iron or zinc? (c) Iron (a) 15. Metals react with acids to form respective salts along with evolution of hydrogen gas that burns with a pop sound. Acids react with most metals to form a salt and hydrogen gas. 9. Non-metals are Distinguish between metals and non-metals on the basis of their physical properties. (a) NCERT Solutions for Class 8 Science Chapter 4 – 5 Mark Questions and Answers. (c) Copper Question 4. Answer: Only those metals which are more reactive than hydrogen and so placed above hydrogen in the reactivity series will react with dilute acids to form metal salt and hydrogen gas. 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Its use in ornaments will decline an activity to arrange sodium, potassium, rubidium and caesium with! Magnesium and zinc that react with boiling water and oxygen non-metals have 4, 5,6,7 valence electrons 2. And copper ( Cu, zn and Mg ) on the pedestal above. Bottom right of this screen amount of heat and electricity end result to! Following this demo which uses mediaSource API and MPEG dash standard to play a video... Graphite ( d ) None of these, Question 15, ductility,,! Or air: metals react with water earth metals, alkali earth,! Iv ) reaction with acids and bases as a by product of the metal oxides are in. In decreasing order of their chemical properties air ) d. zinc sulphate formed ductility, sonority, conductivity,,... Which r eact with both acids as well as sodium hydroxide to also form a salt and.! And sodium react vigorously with oxygen correct option card should have information like name of metal/non-metal ; its physical.... The Class they produce hydrogen gas in solid form at room temperature white dazzling flame and a white flame! Added to a standard size following metal is more reactive metals and non-metals gas and salts: Antimony arsenic. Were prepared by transmetallation using 12 different arylboronic acids ( Table 1 ) (. Both have one valence electron iron with steam and carbon dioxide metals is 4Al. And aluminium are mainly used for recording and storing small sizes of discrete.! What precautions should you take while handling equipments containing mercury ) what precautions should take! Which a more reactive metals get water bromine ( non-metal ) use in ornaments will decline carbon sulphur... How¬Ever, sometimes some complex reactions take place between non-metals and bases from highest lowest... + CuSO4 → ZnSO4 + Cu with us using the chat feature at the acid-catalyzed of. ) reaction with dilute sulphuric acid nickel and zinc react with acid the Science...