Fill in the blanks: The molecules are at a greater distance in ______ compared to liquids. - Chemistry

Advertisements
Advertisements
Fill in the Blanks

Fill in the blanks:

The molecules are at a greater distance in ______ compared to liquids.

Advertisements

Solution

The molecules are at a greater distance in gases compared to liquids.

  Is there an error in this question or solution?
Chapter 3: Matter - Objective Type Questions 1

APPEARS IN

Selina Class 6 Selina Concise Chemistry
Chapter 3 Matter
Objective Type Questions 1 | Q 1.4

RELATED QUESTIONS

Convert the following temperature to Celsius scale:-573 K


Convert the following temperatures to the celsius scale. 470 K


Give two reasons to justify an iron almirah is a solid at room temperature.


What do you mean by the change of state? Write the flow chart showing the complete cycle of change of state.


Mention a change which is always


What do you observe when :

ime is dissolved in water.


State whether the following is physical or chemical changes.

heating of water —


Tick (√) the correct alternative from the choice given for the following statement.

When you put some ice cubes in a glass, droplets of water are formed on the outer wall of the glass. This explains the phenomenon of


Tick (√) the correct alternative from the choice given for the following statement.

When we add water to the following substances, which one will show a chemical change?


Tick the most appropriate answer.

Melting of ice is a


Tick the most appropriate answer.

Chemical changes involve


Dissolving salt in water is a reversible change.


Give an example of desirable change which can also be undesirable.


How do you say that the process of digestion is a chemical change ?


What is the name of the process in which a gas turns directly into a solid ?


State one condition necessary to liquefy gases (other than applying high pressure).


What is the chemical name of dry ice ?


Under what conditions heat can be given to a substance without raising its temperature ?


Explain why, there is no rise in temperature of a substance when it undergoes a change of state though heat is supplied continuously.


Draw a labelled diagram of the experimental set-up to study the latent heat of vaporisation of water.


On converting 308 K, 329 K and 391 K to Celsius scale, the correct sequence of temperatures will be :


What do you observe when: little amount of curd is added to a bowl containing warm milk and kept for five hours.


Define the following terms: Sublimation


Define the following terms: Diffusion


Define the following terms: Liquefaction


Give reasons:

 How is interconversion of states of matter different from chemical reaction?


Write whether the following statement is true or false:

 There is no difference between evaporation and boiling


Write whether the following statement is true or false:

The intermolecular force of attraction is the weakest in gases.


Name the phenomenon which causes the following changes:

Conversion of ice into water


Give two examples of the following:

Substances which sublime.


State which of the following statement is true or false. If false write the correct statement.

Atoms/molecules in gases move only about their own positions.


State if the following is a physical property of a substance.

Water acidified with dilute sulphuric acid is a good conductor of electricity.


In the paragraph below, write ‘solid’, ‘liquid’ or ‘gas’ in each of the brackets depending on the substance referred to just before.

On a bright sunny day, Riya and Gargi are playing with a ball ( ) in the park. Gargi feels thirsty. So, Riya brings tender coconut water ( ) for her. At the same time, a strong breeze ( ) starts blowing and it also begins to rain ( ). They run back into the house ( ), change their clothes ( ), and then their mother gives them a cup ( ) of hot milk ( ) to drink.


In the paragraph below, write ‘solid’, ‘liquid’ or ‘gas’ in each of the brackets depending on the substance referred to just before.

On a bright sunny day, Riya and Gargi are playing with a ball ( ) in the park. Gargi feels thirsty. So, Riya brings tender coconut water ( ) for her. At the same time, a strong breeze ( ) starts blowing and it also begins to rain ( ). They run back into the house ( ), change their clothes ( ), and then their mother gives them a cup ( ) of hot milk ( ) to drink.


Discuss.

Riya pours some water from her bottle into another bottle. Does it change the shape of the water?


Discuss.

Halima picks up a small stone from the ground and puts it in the water in a dish. Does the shape of the stone change?


What is it made from? Why?

A sickle to cut sugarcane.


What is it made from? Why?

The sheets used for roofing.


What will happen if....? And why?

A bell is made of wood.


What will happen if....? And why?

Rubber is not fitted on a pair of tongs.


What will happen if....? And why?

An axe is made of rubber.


Why does this happen?

Coconut oil thickens in winter.


Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight.

Can the change be reversed or is it irreversible?


State whether the following statement is true or false. If false write the correct statement.

Desirable changes are meaningful, while undesirable changes are unfavourable.


State whether the following statement is true or false. If false write the correct statement.

During physical changes, the composition of the original substance is not altered, but the properties of the original substance are altered.


State whether the following statement is true or false. If false write the correct statement.

During a chemical change the composition of the original substance is not altered and the change is irreversible.


Fill in the blanks with the correct words of the statement given below:

During sublimation, a solid on heating turns directly into _________ and on cooling back to __________.


State which of the three states of matter Le. solids, liquids or gases – have

(a) No definite volume
(b) A definite shape
(c) High density
(d) No free surfaces
(e) Particles – which diffuse very easily.


What is inter-conversion of matter. Give the meaning of the terms involved in inter-conversion of matter

(a) Melting
(b) Vaporisation
(c) Liquefaction or condensation,
(d) Solidification or freezing
(e) Sublimation.


Select the correct answer from A, B, C, D & E for the statement given below:

The state of matter which has ___________ least density & no free surfaces.


With reference to the liquid state of matter – answer the following

On heating, the liquid, do the particles gain or lose energy.


With reference to the liquid state of matter – answer the following

At what point will the particles become free and escape as a gas.


Complete the statement by filling the blank with the correct word given below.

Conversion of vapour [or gas] into a liquid is termed ____________.


Give the reason for the following 

On heating a sublimable solid, the molecules break free & escape from the surface of the solid directly into vapour.


Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in following case.

During the melting of solids, the inter-particles space __________.


Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in the following case.

During vaporization, the liquid particles ____________ energy.


Complete the blank with reference to interconversion of matter on the basis of kinetic theory-with the word ‘increase’, ‘decreases’, ‘gain’, ‘lose’, or ‘overcome’ in the following case.

During liquefaction, the particles ________ energy.


Share
Notifications



      Forgot password?
Use app×