Properties of Solids

Q.

Liquids generally have lower density as compared to solids. But ice floats on water. Explain why?

Q.

Give two reasons to justify: An iron almirah is a solid at room temperature?

Q.

Liquids generally have a lower density as compared to solids. But you must have observed that ice floats on water. Find out why.

Q.

Question 3 (c)
Give reasons
(c).A wooden table should be called a solid.

Q.

A rubber band can change its shape on stretching.will u classify it as solid or not?why?

Q.

Question 4
Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why.

Q.

Sponge is a solid yet we are able to compress it. Why?

1. A sponge is a solid that has minute holes in which air is trapped.

2. A sponge is hollow solid in which air is trapped.

3. A sponge is a delicate solid in which oxygen gas is trapped.

4. A sponge is a porous substance in which water is trapped.

Q.

How do solids, liquids, and gases differ in shape and volume?

Q. Why do solids have any number of free surfaces and gases have no free surfaces at all?

Q.

Sponge is a solid, yet we are able to compress it. Why ?

Q.

Why is aluminium a bad conductor?

Q.

Out of solids, liquids and gases, which one has :

(a) maximum movement of particles ?

(b) maximum interparticle attractions ?

(c) minimum spaces between particles ?

Q.

Explain why :

(a) air is used to inflate tyres.

(b) steel is used to make railway lines.

Q.

The substance X normally exists in a physical state which can flow easily but does not fill its vessel completely. It also turns anhydrous copper sulphate blue. When substance X is cooled excessively, it changes into a substance Y which has a fixed shape as well as a fixed volume, If, however, the substance X is heated strongly, it changes into a substance Z which has neither a fixed shape nor a fixed volume.

(a) Name the substance. (i) X (ii) Y and (iii) Z.

(b) What is the process of conversion of X into Y known as?

(c) At which temperature X gets converted into Y?

(d) What is the process of conversion of X into Z known as?

(e) At which temperature X gets converted into Z?

Q.

State two charaacteristic properties each of :

(a) a solid

(b) a liquid

(c) a gas

Q.

Solids are generally non compressible why can sponge be readily compressed?

Q.

Give reason : why do not solids posses fluidity

Q.

Why are solids hard and rigid?

Q. Assertion [A]: Solids have definite shape and volume.
Reason [R]: Solids have strong interparticle force of attraction.

1. A is true and R is false.
2. Both A and R are true.
3. Both A and R are false.
4. A is false and R is true.

Q.

Differentiate between solid liquid and gas on the basis of the given properties

(a) Shape (b) Volume (c) Mobility (d) Compressibility (e) Arrangement of the molecule (f) Intermolecular forces

Q.

Give two resons to justify that :

(a) Water is a liquid at room temperature.

(b) An iron almirah is a solid.

Q.

Liquid is the state of matter that has the tendency to maintain their shapes when subjected to the outside force.

1. True

2. False

Q.

Arrange solids, liquids and gases in order of:
(i) Increasing interparticle forces
(ii) Fluidity
(iii) Compressibility

Q.

Justify the statement “Sand is solid”.

Q.

1. The state of matter which has no definite shape or volume is called.

1. Solid

2. Liquid

3. Gas

4. Water

Q. The volume of a substance ‘X’ cannot be increased or decreased by reducing or increasing pressure upon it. ‘X’ can be

1. iron block
2. sponge
3. piece of bread
4. air

Q. how sugar is considered as solid as it takes the shape.of the container

Q. Which of the below mentioned options is a set of solid objects?

1. Rubber band, sugar, sponge
2. Sugar, milk, sponge
3. Rubber band, milk, sponge
4. Milk, sponge, soap foam

Q.

A wooden table should be called a solid. Justify.

Q.

(a) Compare the properties of solids, liquids and gases in tabular form.

(b) Give two reasons for saying that wood is a solid.