- As we have seen, a sponge regains its shape and mass remains the same after the compression. The sponge is not a crystalline solid. RIGIDITY 2. Jeanne Paquette , 20+ Years Teaching Invertebrate Paleontology at McGill University When we tried to squeeze the sponge, the trapped air leaks out. We can regard rubber band as a solid, because it regains its shape when the stretching force is removed from it. 2. Sponge has minute holes,in which air is trapped, when we press it,the air is expelled out and we are able to compress it. Question 7: Although solids are slightly compressible or rigid sponges can be compressed easily, why? Share with your friends 1 Follow 1 Fariha, added an answer, on 4/7/12 Solid, liquid and gas are the three states of matter. Answer: A sponge has minute holes, in which air is trapped, when we press it, the air is expelled out and we are able . pressure = density . (c) Sponge though compressible is a solid, (d) Ice is solid at 0°C, while water is liquid at room temperature. When it is compressed, the air in the holes is squeezed out. When we press the sponge the air present in these pores is released out and hence we are able to compress it. Answer a) Sponge is a solid still it can be compressed as it has air spaces between them and air is filled in those air spaces, so when we compress the sponge the air is expelled out of those spaces and hence the sponge is compressed and when we release it, it attains it's initial position as the air is again filled in those spaces. However all its other characteristics is representing solid-state of matter & hence it is considered a solid. Highly compressible. As opposed to air, for example, which is why the air pressure is exponential with respect to height, and not linear as is the case in . 11. Thus, we may conclude that solids, liquids, and gases can diffuse into liquids. The air is dispersed in the solid. Scent consists of a number of sweet smelling gases or vapours. (b) A gas exerts pressure on the walls of the container. ( CCE 2012) 3. c) Smell of perfume travels a few yards away. Answer: Gases spread more easily than liquids because the molecules of the gas are very loosely packed. Answer: Sponge is a solid with minute pores in it. (b) Rate of evaporation of an aqueous solution decreases with increase in humidity. (c) Sponge is solid but compressible. These holes are filled with air. (c) What value of Adil is reflected in the above act? This makes it lighter in volume. Therefore, it is compressible even if it is solid. We need a . The solids are incompressible. Why sponge though compressible is a solid? This is due to the fact that in the liquid state, particles move freely and have greater space between each other as compared to particles in the solid state. Give reasons(a) A gas fills completely the vessel in which it is kept. Sponge has very small holes throughout its structure. A sponge is a solid. (A)A sponge has minute holes,in which air is trapped, when we press it,the air is expelled out and we are able to compress it. 1) Comment on the following statements. Try squeezing a pillow, a tennis ball, or a . compressible = change of density due to pressure. Answer. Because the sponge is not sealed, some of the gas also escapes, but if you cut a piece of sponge and put it into the syringe, it would still compress. The sponge is considered as the solid as it has all other properties possessed by the solid. Why is air compressible? It is because volume of ice is more than that of the equal amount of water. The sponge is considered as the solid as it has all other properties possessed by the solid. 6. The sponge is an 'aerosol'. [NCERT Exemplar] Answer: (a) Evaporation produces cooling as the particles at the surface of the liquid gain energy from the b) Clothes dry faster on a windy day. … Hence it is a solid. flow and solid deformation within a porous medium. Water at room temperature is liquid due to the presence of hydrogen bond. The melting point of ice is 273.16 K*. Originally Answered: A sponge can be compressed but is treated as solid why? Hint: Despite the fact that the sponge is a solid, it is compressible due to the existence of air spaces inside the sponge. ( CCE 2012) 3. So when pressure is applied those porosities or holes are pressed. That is why it seems to be compressible. Answer: A sponge is considered solid even when it can be compressed like gases or liquids because its compression is because of the presence of minute air holes or cavities filled with air rather than the solid matter it has in its structure. That's why when we press it the air trapped in the holes comes out. Sponge is compressible because it is having minute pores in which air is trapped .on presssing the air is expelled. . Give reasons(a) A gas fills completely the vessel in which it is kept. (iv) We can liquefy oxygen and nitrogen gas but not carbon dioxide gas. The sponge is not a crystalline solid. b) When a solid melts,its temperature remains the same.Give reason. toskeleton, which . Answer: Sublimation is the change of gaseous state directly to solid state without going through liquid state and vice-versa. 2.a) Enumerate the changes that take place inside the matter during the change of states. When, why an iron needle sinks in water, but a ship made of iron floats on water. (c) Sponge though compressible is a solid. Solution: When a substance melts, it absorbs heat for the conversion of solid state into liquid . Melting Point. (b) At room temperature the forces of attraction between the particles of solid substances are stronger than those which exist in the gaseous state. These holes are filled with air. . When we press the sponge air is expelledfrom its holes making it. Define latent heat of fusion. But it is an amorphous solid like rubber. c) Smell of perfume travels a few yards away. a) A sponge is a solid but can be easily compressed. However, there are some exceptions. FILLING A GAS CONTAINER. At the beginning, water When an external load is applied sponge, the fluid sticks to the hydrophilic polymers that form the sponge— filled pores of the sponge experience a change in pres- a restatement of the fact that the sponge is wettable. Ans : Sponge has very small holes throughout its structure. Solution Verified by Toppr Sponge is a solid state of matter yet it is compressible in nature. Sponge is a solid, yet we are able to compress it. Answer: A sponge is solid but it is compressible because it has tiny holes in which air is trapped.When we compress a block of sponge, the air is expelled out and we are able to compress it. Question 27. Compressibility: Actually, the constituent particles are so closely packed in a solid that they either do not come closer or do so only slightly when a high pressure is applied. (b) Solids are denser than liquids but ice floats on water. Answer: A sponge although being a solid has minute pores in it which traps a sufficient amount of air. Why a sponge is called a solid even it can be compressed? But waht happens sponge is consisting of small porosities in it. Answer: (a) The tyre burst because the air inside the tyre got heated and therefore exerted pressure . Sponge though being a solid can be compressed with hands. Density is least and diffuse. the external force = -restorative force. When sponge is pressed, the air present in the pores comes out and the sponge is compressed. Question. Why does the sponge swell? gravity constant . Why does the temperature of a substance remains constant during its melting point or boiling point. 2.a) Enumerate the changes that take place inside the matter during the change of states. Why water exist as liquid at room temperature? (c) Sponge though compressible is a solid. Justify. in direction) (Newton's 1st law of motion) when in EQUILIBRIUM. (c) A wooden table should be called a solid. The melting point of a solid is an indication of the strength of the force of attraction between its particles. 3 Answer (s) Available. Sponge is a porous solid. When it is compressed, the air in the holes is squeezed out. . Comment on the following statements: (a) Evaporation causes cooling. Thus, we are able to compress it. 10. The air is dispersed in the solid. Best answer Sponge has minute pores in which air can be trapped, when pressed the air is expelled out and so it is compressible. This makes it lighter in volume. Why can a sponge be compressed a solid? Answer: For the three characteristics of matter and their examples, (a) Spreading of smell of scent in a room is because of diffusion of the gases. (iii) Sponge though compressible is a solid. Suggest Corrections. (e) Sugar crystals dissolve faster in hot water than cold water. This is because of space/Interparticle space between the particles of sponge. c) Sponge is undoubtedly a solid as it has definite shape and volume unlike gases and liquids. These bonds hold water molecules together for small . Answer: Latent heat of fusion is the amount of heat energy required to change 1 kg of solid into liquid at its melting point. It has minute holes, in which air is trapped and when pressed the air is expelled out and hence we are able to compress it easily. IN these holes , air is trapped. Why is a sponge considered a solid when it can be compressed like gases or liquids? ?/ COMEENT ON 1. (d) We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert. ALTHOUGH SPONGE IS A SOLID, BUT THEN ALSO IT CAN BE COMPRESSED. Question Sponge is a solid, yet we are able to compress it. (b) Rate of evaporation of an aqueous solution decreases with increase in humidity. Look at other objects that are compressible, but seem to be solid. These holes are filled with air. So the deeper you go, the more pressure, but the density of water will remain the same. it is still considered as a solid because it has a definite volume and shape does not changes unlesss compressed. While compressing the air is exhaled out from . When, why an iron needle sinks in water, but a ship made of iron floats on water. (a) Evaporation produces cooling. But sponge have some pores in it, where air is trapped. try drawing a free body dia, resolve the (couple)forces into their components, you will find they cancel. 9th Class Science Matter in Our Surroundings. Yet it is solid in nature because there is a force of attraction between the particles of sponge. Why? how are the five power points of a multi plug connected Answer & Earn Cool Goodies. Why does the temperature of a substance remain constant during its melting point or boiling point? question_answer. Therefore, a sponge can be considered as solid though it is compressible. Related QnA: because it has fixed shape, size and volume. We can see that there are several minute or small holes in a sponge. (v) Sand is a solid at room temperature. The sponge is an 'aerosol'. How is it possible? opp. (c) The arrangement of paritcles is less ordered in the liquid state. We can easily move our hand in the air but to do the same through a solid block of wood. (d) Ice is solid at 0°C, while water is liquid at room temperature. How is it possible? Rubber band changes its shape under the influence of force and regains the shape when the force is removed. b) Clothes dry faster on a windy day. Why? Answer: (a) Evaporation of a liquid at room temperature leads to a cooling effect. A stage is reached when the solid melts and is converted to a liquid. (iii) Fluidity : It is the tendency of a substance to flow. Sponge is solid . TABULATE THE DIFFRENCES BETWEEN SOLID, LIQUID AND GAS. . The rate of diffusion of liquids is higher than that of solids. b) When a solid melts,its temperature remains the same.Give reason. a sponge has minute holes,in which air is trapped, when we press it,the air is expelled out and we are able to compress it.sponge is a porous solid.but in other words the property of compressibility means an object is commpresed and it remains in that compressed shape until we apply force to get it back to its normal position and when we compress … This conversation is already closed by Expert Define sublimation. Answer. A sponge can be compressed easily but still we count them in solids because they haveminute pores in it which are filled with air. 3. Now sponge is polymer and flexible. A sponge has a definite volume, has a . Which of the following represent non flowing seeded plant Answer & Earn Cool Goodies. These pores make the sponge a soft material. Define velocity and acceleration. But it is an amorphous solid like rubber. (a) A sponge is a solid but can be easily compressed. Anuradha Puri, Meritnation Expert added an answer, on 16/9/13 Sponge contains small pores in which air is trapped.On pressing, this air is expelled leaving the sponge compressible.It is a solid because it has a definite shape and volume and doesnot change its shape unless compressed. WHY?? The gas in the holes gets smaller, so the entire sponge takes up less space. And one more thing, bulk stress, and pressure are scalar quantities. Answer: A solid has fixed shape, size and volume. The solids are incompressible. Here is the answer => Sponge is a solid .This is because it has a definite volume and a definite shape. When we. The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its melting point. Thus, we are able to compress it. COMPRESSIBLITY 3. It changes its shape only ,when an external force is applied. So, the sponge can be compressed. Question. ======================================================== (B)On dry days, sweat evaporates quickly, which means it also carries away heat faster. Both the process of evaporation and boiling involves the change of state from liquid to gas but still they are different from each other. height. -When we squeeze or compress the sponge, the solid part changes its shape but stays in the same size and the gas in the holes gets smaller, so the entire sponge takes up less space. They have really high density and are heavy in nature. Gases are highly compressible. (ii) Compressibility : The property due to which the particles of matter can be compressed or reduced in volume by applying force or pressure. When we compress the sponge air is expelled from its holes making it highly compressible when we release it attains its initial position as the air is again filled in those spaces. Which of the following represent non flowing seeded plant Answer & Earn Cool Goodies. When it is compressed, the air in the holes is squeezed out. Answer: A sponge has minute holes, in which air is trapped, when we press it, the air is expelled out and we are able . Solve any question of States Of Matter with:- Solid cannot be compressed too much. compressible != pressure. The sponge has multiple holes, which can be referred to as air cavities, in which air can be trapped and expelled when the sponge is compressed. Sponge though being a solid can be compressed with hands. For example, a sponge made from some foam or rubber material can be easily compressed. Member since Mar 31, 2017 A sponge can be compressed easily but still we count them in solids because they have minute pores in it which are filled with air. A sponge can be compressed easily but still we count them in solids because they haveminute pores in it which are filled with air. Physics. (b) Water is a liquid and liquids take up the shape of any container in which these are kept. 3 Answer (s) Available. (c) A wooden table should be called a solid. Liquids and gases possess fluidity while solids are rigid. a) A sponge is a solid but can be easily compressed. Jim Mowreader , Wide-format Printing Expert (2008-present) Ans : Sponge has very small holes throughout its structure. Define velocity and acceleration. 9. (d) We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert. (b) A gas exerts pressure on the walls of the container. Why a rubber band is considered as a solid? Why? Then the space of air is occupied by the sponge, which causes it to shrink. (b) Gases spread more easily than liquids. how are the five power points of a multi plug connected Answer & Earn Cool Goodies. A sponge has a definite volume, has a . as net force = 0 as a = 0 (equal in mag.
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