What are metals and non-metals ?

What are metals and non-metals ?
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1 Answer

Answer :

Metals: Atoms of elements which produce cations by releasing electrons are called metals. Non-metals: All the elements that receive electrons and are anionized or share electrons during the formation of bonds are called non-metals .
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Which of the following properties is generally found, in non-metals?' (1) Brittleness (2) Conductivity (3) Ductility (4) Malleability

Description : Which of the following properties is generally found, in non-metals?' (1) Brittleness (2) Conductivity (3) Ductility (4) Malleability

Last Answer : (1) Brittleness Explanation: An important physical property of non metals is that they are brittle and hence cannot be beaten into sheets or drawn into wires. In other words, non-metals are non-malleable and non-ductile. Where stress is applied on nonmetals, they shatter into pieces.

Which one of the following non-metals is not a poor conductor of electricity? (1) Sulphur (2) Selenium (3) Bromine (4) Phosphorus

Description : Which one of the following non-metals is not a poor conductor of electricity? (1) Sulphur (2) Selenium (3) Bromine (4) Phosphorus

Last Answer : (2) Selenium Explanation: Selenium is a non-metallic element; it is not a very good conductor of heat and electricity.

Hall probe is made up of A. metals B. non metals C. semiconductor D. radioactive material

Description : Hall probe is made up of A. metals B. non metals C. semiconductor D. radioactive material

Last Answer : semiconductor

What energy is converted into heat energy when heat is applied at the junction of two different metals ?

Description : What energy is converted into heat energy when heat is applied at the junction of two different metals ?

Last Answer : When heat is applied at the junction of two different metals, heat energy is converted into electrical energy.

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because – (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because - (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : (3) metals are good conductors of heat Explanation: On a chilly day, the room temperature is lower than our body temperature. Since metals have a higher coefficient of thermal conductivity than plastic, they ... from our fingers will flow to the metal cap much more quickly than to the plastic body.

Superconductors are those elements – (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperature (3) Which conduct electricity only at super-high temperature (4) Which conduct electricity only, at super-high temperatures

Description : Superconductors are those elements – (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperature (3) Which conduct electricity only at super-high temperature (4) Which conduct electricity only, at super-high temperatures

Last Answer : (2) Whose resistance falls almost to zero at very low temperature Explanation: Superconductivity is a phenomenon of exactly zero electrical resistance and expulsion of magnetic fields occurring in ... lines from the interior of the superconductor as it transitions into the superconducting state.

Which °fine metals has the maximum thermal conductivity? (1) Iron (2) Aluminium (3) Silver (4) Copper

Description : Which °fine metals has the maximum thermal conductivity? (1) Iron (2) Aluminium (3) Silver (4) Copper

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Metals are good conductors of electricity because - (1) they contain free electrons (2) the atoms are lightly packed (3) they have high melting point (4) All of the above

Description : Metals are good conductors of electricity because - (1) they contain free electrons (2) the atoms are lightly packed (3) they have high melting point (4) All of the above

Last Answer : (1) they contain free electrons Explanation: Copper is used for electrical wiring because it is a good conductor of electricity. Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points.

Which of the following metals is used for the manufacture of heating elements provided in electric iron? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Description : Which of the following metals is used for the manufacture of heating elements provided in electric iron? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

Last Answer : (3) Nichrome Explanation: Nichrome is the most common domestic heating element and is found in many household products. Commonly, items such as toasters, hair dryers and heaters use nichrome coils to ... percent nickel and 20 percent chromium, and its high melting point of 1,400 degrees Celsius.

In which medium, velocity of sound is maximum? (1) Metals (2) Air (3) Water (4) Polymer

Description : In which medium, velocity of sound is maximum? (1) Metals (2) Air (3) Water (4) Polymer

Last Answer : (1) Metals Explanation: The speed of sound is highest in solid. The speed of sound depends on the density of the medium through which it is travelling.

Metals are good conductors of electricity because – (1) they contain free electrons (2) the atoms are lightly packed (3) they have high melting point (4) All of the above

Description : Metals are good conductors of electricity because – (1) they contain free electrons (2) the atoms are lightly packed (3) they have high melting point (4) All of the above

Last Answer : (1) they contain free electrons Explanation: Copper is used for electrical wiring because it is a good conductor of electricity. Metal particles are held together by strong metallic bonds, which is why they have high melting and boiling points.

Which of the following are bad conductors of electricity? (1) Mica and Quartz (2) Metals and Rubber (3) Metals and Mica (4) Mica and Rubber

Description : Which of the following are bad conductors of electricity? (1) Mica and Quartz (2) Metals and Rubber (3) Metals and Mica (4) Mica and Rubber

Last Answer : (1) Mica and Quartz Explanation: Metals are good conductors of electricity, because they have free electrons. Micaand quartz are examples of insulators (bad conductors of electricity), they don't have free electrons.

Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electro negativity (3) Low ionization energy (4) Malleability

Description : Which among the following is not a characteristic of transition metals? (1) Tendency to gain electrons (2) Low electro negativity (3) Low ionization energy (4) Malleability

Last Answer : (1) Tendency to gain electrons Explanation: The transition metals have a tendency to lose electrons. Since the electrons in the highest energy level are actually on a lower principal energy number than the ... makes it relatively easy to lose some or all of their electrons to land in stable state.

Refractory metals are known for which of the following properties: w) lack of chemical reactivity x) low density y) high melting point z) high thermal conductivity

Description : Refractory metals are known for which of the following properties: w) lack of chemical reactivity x) low density y) high melting point z) high thermal conductivity

Last Answer : ANSWER: Y -- HIGH MELTING POINT

A bimetallic strip commonly found in home furnace thermostats works because of the difference in this property of the two metals. Is it: w) thermal shock x) thermal conductivity y) thermal expansion z) thermal diffusivity

Description : A bimetallic strip commonly found in home furnace thermostats works because of the difference in this property of the two metals. Is it: w) thermal shock x) thermal conductivity y) thermal expansion z) thermal diffusivity

Last Answer : ANSWER: Y -- THERMAL EXPANSION

On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals have higher thermal capacity than plastics (2) plastics have a lower density than metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Description : On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because : (1) metals ... metals (3) metals are good conductors of heat (4) plastics have a higher thermal conductivity than metals

Last Answer : metals are good conductors of heat

Which of the metals has the maximum thermal conductivity? (1) Iron (2) Aluminium (3) Silver (4) Copper

Description : Which of the metals has the maximum thermal conductivity? (1) Iron (2) Aluminium (3) Silver (4) Copper

Last Answer : Silver

Superconductors are those elements (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperatures (3) which turn into insulators at very low temperatures (4) which conduct electricity only at super-high temperatures

Description : Superconductors are those elements (1) Whose conductivity is intermediate between metals and insulators (2) Whose resistance falls almost to zero at very low temperatures (3) which turn into insulators at very low temperatures (4) which conduct electricity only at super-high temperatures

Last Answer : Whose resistance falls almost to zero at very low temperatures

Which of the following metals is used for the manufacture of heating elements provided in electric iron ? (1) Nickel (2) Chromium (3) Nichrome (4) Tungsten

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Why does metal make a sound when hammered and non-metals not?

Description : Why does metal make a sound when hammered and non-metals not?

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Which atomic structures go with metals/non metals?

Description : Which atomic structures go with metals/non metals?

Last Answer : I'm assuming you haven't gotten an answer to your question for 2 months because you're question isn't specific and doesn't really make sense (no offense ) What are you looking you for? I'd be glad ... , I'm a chem eng major and helping ppl with their chemistry helps me remember and get better at it!

Examples of non-metals are ………. , …….. and ……. -Science

Description : Examples of non-metals are ………. , …….. and ……. -Science

Last Answer : Sulphur, chlorine and oxygen.

Non-metals cannot be drawn into wires. Why ? [DAV2008] -Science

Description : Non-metals cannot be drawn into wires. Why ? [DAV2008] -Science

Last Answer : Non-metals are not ductile, therefore they cannot be drawn into wires.

How many metals and non-metals are there in periodic table ?

Description : How many metals and non-metals are there in periodic table ?

Last Answer : In the periodic table, those metals and 2 non-metals are : - Alkali metals , clay metals , transition elements , interstitial elements , lanthanides , actinides and weak metals are all called metals together. Halogen and inert gases are also non-metals.

Are non-metals and gases the same ?

Description : Are non-metals and gases the same ?

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What are all non-metals ?

Last Answer : All non-metallic corrosive

Hot conc. `H_(2)SO_(4)` acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which of the following elements is oxidised

Description : Hot conc. `H_(2)SO_(4)` acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which of the following elements is oxidised

Last Answer : Hot conc. `H_(2)SO_(4)` acts as moderately strong oxidising agent. It oxidises both metals and non-metals. Which ... products ? A. Cu B. S C. C D. Zn

Non-metals combine with oxygen to form usually

Description : Non-metals combine with oxygen to form usually

Last Answer : Non-metals combine with oxygen to form usually A. Basic oxides B. neutral oxides C. acidic oxides D. Amphoteric oxides

Compare chemical properties of metals and non-metals.

Description : Compare chemical properties of metals and non-metals.

Last Answer : Compare chemical properties of metals and non-metals.

Can non metals be solids?

Description : Can non metals be solids?

Last Answer : Need answer

Why cant flame test be use to identify non metals?

Description : Why cant flame test be use to identify non metals?

Last Answer : Non metals cannot emit a colored light.

What are some of the non magnetic metals?

Description : What are some of the non magnetic metals?

Last Answer : Some non-magnetic metals: aluminium, copper, lead, tin, titanium, zinc, brass, bronze, gold, and silver

What compounds only contain non metals?

Description : What compounds only contain non metals?

Last Answer : What is the answer ?

Do all non metals have a dull surface?

Description : Do all non metals have a dull surface?

Last Answer : Gases for example haven't a surface.

What group of non metals are the most reactive?

Description : What group of non metals are the most reactive?

Last Answer : The most reactive nonmetal is fluorine. Fluorine is a halogen, which is Group 17 on the Periodic Table, and the halogens are the most reactive...

What are the chemical properties of metals & non-metals?

Description : What are the chemical properties of metals & non-metals?

Last Answer : metals electropositive, basicity, hard, ductile, malleable, sonorous nonmetals electronegative, acidic, brittle, and not all the other three properties.

What are the chemical properties of metals & non-metals?

Description : What are the chemical properties of metals & non-metals?

Last Answer : metals electropositive, basicity, hard, ductile, malleable, sonorous nonmetals electronegative, acidic, brittle, and not all the other three properties.

What happens when metals react with non metals?

Description : What happens when metals react with non metals?

Last Answer : they form a salt

India is particularly poor in reserves of (a) coal (b) iron ore (c) non-ferrous metals (d) limestone

Description : India is particularly poor in reserves of (a) coal (b) iron ore (c) non-ferrous metals (d) limestone

Last Answer : Ans: (c)

Elements that show the properties of both metals and non-metals are called (a) Allotropes (b) Metalloids (c) Alloys (d) Colloids

Description : Elements that show the properties of both metals and non-metals are called (a) Allotropes (b) Metalloids (c) Alloys (d) Colloids

Last Answer : Ans:(b)

What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Description : What are transition elements? (1) Elements whose two outermost shells are incomplete (2) Elements which possess properties of both, metals and non-metals (3) They have eight electrons in the outermost shell (4) Elements whose three outermost shells are incomplete

Last Answer : (1) Elements whose two outermost shells are incomplete

Which is not a type of elements? (1) Metals (2) Non Metals (3) Metalloids (4) Gases

Description : Which is not a type of elements? (1) Metals (2) Non Metals (3) Metalloids (4) Gases

Last Answer : (3) Metalloids Explanation: Element is a chemical substance consisting of atoms having the same number of protons in their atomic nuclei. There are 118 elements that have been identified. The elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, tellurium and polonium.

Which of the following are properties is generally found in non-metals

Description : Which of the following are properties is generally found in non-metals

Last Answer : Brittleness

The ore only two metals that are Non–Silver in colour, they are–

Description : The ore only two metals that are Non–Silver in colour, they are–

Last Answer : Copper and gold

Who Classified Elements as Metals and non-metals?

Description : Who Classified Elements as Metals and non-metals?

Last Answer : Lavoisier

Elements showing properties of both met- als and non-metals are?

Description : Elements showing properties of both met- als and non-metals are?

Last Answer : Metalloids

Generally __________ are subjected to galvanising (i.e., zinc coating). (A) Non-ferrous metals (B) Non-metals (C) Low carbon steels (D) Stainless steel

Description : Generally __________ are subjected to galvanising (i.e., zinc coating). (A) Non-ferrous metals (B) Non-metals (C) Low carbon steels (D) Stainless steel

Last Answer : (C) Low carbon steels

Galvanising is generally done on (A) Non-ferrous metals (B) Low carbon steel (C) Stainless steel (D) Cast iron

Description : Galvanising is generally done on (A) Non-ferrous metals (B) Low carbon steel (C) Stainless steel (D) Cast iron

Last Answer : (B) Low carbon steel

Combination of metals and ceramics are called (A) Metalloy (B) Cermets (C) Pellets (D) Non-crystalline ceramics

Description : Combination of metals and ceramics are called (A) Metalloy (B) Cermets (C) Pellets (D) Non-crystalline ceramics

Last Answer : (B) Cermets

Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress. (A) Ultimate (B) Yield point (C) Proof (D) None of these

Description : Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress. (A) Ultimate (B) Yield point (C) Proof (D) None of these

Last Answer : (C) Proof