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5th Sample Papers

Everything around us is made up of matter. Matter occupies space and has weight. Some forms of matter are visible, while others are invisible. The science behind this concept is complex. John Dalton was the first person to explain this basic concept of matter through his atomic theory. Among the forms of matter, solids and liquids are visible, but gases are not visible to the naked eye. The nature of a substance depends upon the matter in it. Substances Possess some definite characteristic features due to the arrangement of matter in them .The arrangement of matter in a given substance make them Unique and different from the other substances. This lesson includes questions about the types and states of matter, along with activities exploring the properties of solids, liquids, and gases.

Answer the following :

1. What is matter?
   Answer: Matter is anything that occupies space and has weight.
2. What are some common matters around us?

             Answer: Stones, paper, TV, glass, wood, water, oxygen, soil, pen , chalk, shoes, clothes etc.

3. State the properties of matter.
   Answer: Matter occupies space and has a definite weight. Depending upon the state of matter, they possess characteristics such as hardness, shininess, and temperature.

4. How can you prove that matter occupies space?
   Answer: Place a glass beaker completely filled with water on a plate. Immerse a stone tied to a thread slowly into the beaker. Some water in the beaker flows out and collects in the plate.

5. Name the three forms of matter. Give examples to each
   Answer: The three forms of matter are solids, liquids, and gases. Solids are hard to touch, some of the solids are stones, bricks, table, book etc. Liquids have no fixed shape; some examples are water, milk, juice, and coffee. Gases are invisible, some of them are oxygen, hydrogen, carbon dioxide, air, etc.

6. What is density? Write two factors that density depends.
   Answer: Density is the closeness of atoms or particles within matter. Higher density means that particles are packed closely together. Lower density allows particles to move freely instead of being tightly packed. Density depends on the mass of each particle and the compactness of arrangement of these particles.

7. How are the particles arranged in solids and liquids?
   Answer: In solids, particles are very tightly held together. In liquids, the particles are not as close as solids however, they are closer than that of particles in a gas.

8. Is it possible to change solids into liquid, gases?

           Answer:  Yes it is possible.

9. Think and group these materials in their particular column:
   [butter milk, candle,- curd, kerosene, charcoal, honey, piece of brick, smoke.]
   Answer:

Solid	Liquid	Gas
Piece of brick candle	buttermilk kerosene honey	smoke charcoal

10. What is buoyancy?
    Answer: When an object is immersed into water, we can feel the upward thrust from the water from the bottom which results in the spilling of water out of the container. The spilling or replacement of water is equal to the mass of the object we immersed. This phenomenon is called buoyancy.

11. Write the differences between solids, liquids and gases

 

Solids	Liquids	Gases
Solids feel hard to touch and have very high attractive force between the molecules inside them.	The attractive forces of molecules in liquids are stronger than gases but weaker than solids.	The intermolecular forces are practically non-existent. Thus, there is no definite volume.
They have a definite shape.	Liquids lack specific shape but they take the shape of the container when they are placed in a container.	Gases do not have a definite shape.
The  space between molecules in solids is very less or absent.	The space between the molecules  is moderate but present.	The intermolecular space is very high.
There is a very strong  force of attraction between the molecules.	The force of attraction between molecules is low	There is zero  intermolecular force of attraction between the molecules.
They are incompressible.	Liquids cannot be compressed.	Gases can be compressed quite easily.

 

12. Liquids take the shape of container, explain with activity

Answer: Take some water in a glass jar or beaker and mark the level . We see that water occupies the inner border of all areas of the container. Now slightly tilt the beaker , we see that water becomes triangular. If we pour this water into other  containers of different shapes we will find that the same water assumes different shapes depending on the shape of the container.

13. What is change of state of a matter?
    Answer: The process of a solid changing into a liquid and a liquid turning into a gas upon heating is called a change of state of matter. This can also happen in the opposite direction in which gas turns into liquid and then into solid by a process called condensation or cooling.
14. What is mass?

           Answer: Mass is the total amount of matter cohering together in a substance. SI unit of mass is kg.  

15. Mention the other classification of matter.
    Answer: The other classifications of matter depend on what it is made up of. Matter can also be classified as element, compound or mixtures.

16. What is the main reason for gases don’t have shape?
    Answer: Gas particles move freely and independently in all directions, preventing them from having a definite shape.

17. State the law of conservation of matter

           Answer: The law of conservation of matter states that the quantity of matter in this universe never varies (that is, the quantity of matter remains                  the same) regardless of what change it undergoes.

18. What is sublimation?
    Answer: When a solid directly changed into vapour without turning into liquid is called sublimation. Some examples of sublimation is burning of camphor where camphor turns into smoky flame without any liquid at the bottom.

Fill in the blanks with suitable words

1. Ice cube on heating becomes water(liquid)
2. Water on heating  turnsvapor(gas)
3. Vapor on cooling  turns into water(liquid)
4. Water on cooling producesIce( solid water)
5. The law of conservation of matter is given by the scientist John Dalton.
6. A fluid becomes vapor at its boiling point.
7. The boiling point of water is 100 degrees Celsius
8. The elements are classified into metalsand non-metals.
9. The only liquid metal on Earth is Mercury
10. Plasma is the fourth state of matter.
11. Most substances dissolve in water because water is a universal solvent.
12. Pressureis the force exerted on a unit area.

 

Multiple choice Questions:

1. The particles are held tightly in

1. Liquids
2. Plasma
3. Solids
4. Gases
   Answer: C. Solids

2. Liquids have a

1. Definite volume but not definite shape
2. Definite shape and definite volume.
3. Definite volume
4. Definite shape.

          Answer: A. definite volume but not definite shape

3. The quantity of matter in a given object or a substance is called

1. Buoyancy
2. Density
3. Pressure
4. Mass

      Answer: D. Mass