Maharashtra State BoardSSC (English Medium) 6th Standard

Who Am I? I Dissolve in Water, but Not in Kerosene. - General Science

Advertisements
Advertisements
One Line Answer

Who am I?

I dissolve in water, but not in kerosene.

Advertisements

Solution

I dissolve in water, but not in kerosene- Salt

  Is there an error in this question or solution?
Chapter 5: Substances in the Surroundings –Their States and Properties - Exercises [Page 41]

APPEARS IN

Balbharati General Science 6th Standard Maharashtra State Board
Chapter 5 Substances in the Surroundings –Their States and Properties
Exercises | Q 7.4 | Page 41

RELATED QUESTIONS

What is the physical state of water at 250°C.


What is the physical state of water at 25°C.


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


What do you observe when :

water is boiled


What do you observe when :

some ice cubes are kept in a glass tumbler


What do you observe when :

ime is dissolved in 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.


Ripening of fruits is a desirable 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 ?


The Kelvin temperature is 270 K. What is the corresponding Celsius scale temperature ?


The Kelvin scale temperature is 0 K. What is the corresponding Celsius scale temperature ?


What do you understand by the term 'latent heat' ? What are the two types of latent heat ?


Why does a desert cooler cool better on a hot, dry day ?


What is sublimation ? Name two substances (other than ammonium chloride) which undergo sublimation.


Draw the 'states of matter triangle' to show the interconversion of states of matter.


Which of the following factors are responsible for the change in state of solid carbon dioxide when kept exposed to air ?

  1. increase in pressure
  2. ncrease in temperature
  3. decrease in pressure
  4. decrease in temperature

When water is cooled to a temperature x, it gets converted into ice at temperature x by a process called P. And when ice at temperature x is warmed, it gets reconverted into water at the same temperature x in a process called Q.

  1. What is the value of temperature x in Kelvin ?
  2. What is the process P known as ?
  3. What is the name of energy released during process P ?
  4. What is the process Q known as ?
  5. What is the name of energy absorbed during process Q ?

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: Liquefaction


How does a liquid changes into its gaseous state? Explain


Write whether the following statement is true or false:

Solids have the larger inter-molecular space


Name the phenomenon which causes the following changes:

Formation of water vapour from water


Name the phenomenon which causes the following changes:

Conversion of water into steam


Give two examples of the following:

Substances which sublime.


With the help of a simple diagram how would you show that – solids expand on heating


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

The conversion of water to ice is called freezing.


Fill in the blank with the correct word Given below.

Intermingling of molecules is called ____


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.


Write the properties of this substance.

Water


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?

A knife is made of wood.


Who am I?

I have no shape whatsoever!


Why does this happen?

Kerosene left open in a dish disappears.


Why does this happen?

What you see in the picture.


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

Are any new products formed during the above process.


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.


Matter in any state is composed of small particles – molecules, atoms, or ions. Differentiate the terms above in Italics.


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.


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 

Solids cannot be compressed, but gases are highly compressible.


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 liquefaction, the particles ________ energy.


Share
Notifications



      Forgot password?
Use app×