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1-the object that we get from nature
2-books, buildings
3-insoluble
4-gases
5-wood , iron, aluminium,stone
6-colour, size,shape,etc.
7-false
8-the quality that dissolve something into another thing
9-denser
10-size and volume
11-the object we get from nature and those we get from man
2-books, buildings
3-insoluble
4-gases
5-wood , iron, aluminium,stone
6-colour, size,shape,etc.
7-false
8-the quality that dissolve something into another thing
9-denser
10-size and volume
11-the object we get from nature and those we get from man
Answered by
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1) The materials which are obtained naturally and those which are not man made are called natural materials.
2) Some man made materials are - utensils, clothes, television, refrigerator, mobile phone, etc.
3) Oil is not soluble (or insoluble) in water.
4) Diffusion is fastest in gases.
5) Any four opaque materials are :
● Iron
● Steel
● Bodies of human beings
● Television sets
6) Classification of things is done on the basis of their characteristics.
7) false, coin sinks in water.
8) Solubility is the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent.
9) Materials which are denser than water sink in it.
10) Solids have fixed shape and volume.
11) Natural Materials are those materials which are not made by any humans but is nature-gifted whereas man made materials are those materials which are made by humans.
12) Solids have a fixed shape and volume because in solids, the constituent particles are held together by strong intermolecular forces.
16) ● SATURATED SOLUTION : A solution in which more of the solute cannot be dissolved at a given temperature is called saturated solution.
● DISSOLUTION : The process by which a solute gets dissolved in a solvent is called dissolution.
● DIFFUSION : Diffusion is a physical process where molecules of a material move from an area of high concentration (where there are many molecules) to an area of low concentration (where there are fewer molecules). Diffusion usually happens in a solution in gas or in a liquid.
17) On increasing temperature, the solubility of most solid substance increases but the solubility of a gas in a liquid always decreases with rise in temperature.
20) The substance which is already miscible in a liquid is called a dissolved substance but the process by which a solute gets dissolved in the solvent is called dissolution.
2) Some man made materials are - utensils, clothes, television, refrigerator, mobile phone, etc.
3) Oil is not soluble (or insoluble) in water.
4) Diffusion is fastest in gases.
5) Any four opaque materials are :
● Iron
● Steel
● Bodies of human beings
● Television sets
6) Classification of things is done on the basis of their characteristics.
7) false, coin sinks in water.
8) Solubility is the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent.
9) Materials which are denser than water sink in it.
10) Solids have fixed shape and volume.
11) Natural Materials are those materials which are not made by any humans but is nature-gifted whereas man made materials are those materials which are made by humans.
12) Solids have a fixed shape and volume because in solids, the constituent particles are held together by strong intermolecular forces.
16) ● SATURATED SOLUTION : A solution in which more of the solute cannot be dissolved at a given temperature is called saturated solution.
● DISSOLUTION : The process by which a solute gets dissolved in a solvent is called dissolution.
● DIFFUSION : Diffusion is a physical process where molecules of a material move from an area of high concentration (where there are many molecules) to an area of low concentration (where there are fewer molecules). Diffusion usually happens in a solution in gas or in a liquid.
17) On increasing temperature, the solubility of most solid substance increases but the solubility of a gas in a liquid always decreases with rise in temperature.
20) The substance which is already miscible in a liquid is called a dissolved substance but the process by which a solute gets dissolved in the solvent is called dissolution.
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