Class 5 Science Solid Liquid and Gas QA includes sections of MCQ . True False , Fill in the blanks and Questions….
I. Answer in one word
1. These have the least interparticle space:
➤ c. Gases
2. Which of these is true for particle arrangement in liquids?
➤ a. Closely packed with no regular arrangement
3. Which of these describes the particle arrangement in solids?
➤ c. Tightly packed with a regular pattern
4. Which of these has a fixed volume but no fixed shape?
➤ b. Water
5. The process by which a liquid changes into a gas on heating:
➤ c. Evaporation
6. Condensation is the process by which a gas changes into its liquid form on:
➤ d. Condensation
7. Changing of ice back to water on heating is a:
➤ a. Physical change
B. Match the following
| No. | Term | Match With |
| — | ————— | ——————————————— |
| 1. | Solids | vi. Have a fixed shape and volume |
| 2. | Condensation | i. Changing of a gas into a liquid on cooling |
| 3. | Physical change | v. Can be reversed |
| 4. | Chemical change | ii. Cannot be reversed |
| 5. | Contraction | iii. Causes a decrease in size |
| 6. | Expansion | iv. Causes an increase in volume |
II. Very Short Answer Type Questions
A. Give two examples for each of the following
1. Solids:
➤ Ice, Wood
2. Liquids:
➤ Water, Oil
3. Gases:
➤ Oxygen, Carbon dioxide
4. Physical change:
➤ Melting of ice, Breaking of glass
5. Chemical change:
➤ Burning of paper, Rusting of iron
B. Give one word for the following
1. The space between particles of matter
➤ Interparticle space
2. The process by which a solid changes into a liquid on heating
➤ Melting
3. The temperature at which a solid changes into a liquid
➤ Melting point
4. The process by which a liquid changes into its solid state on cooling
➤ Freezing / Solidification
5. The process by which a liquid changes into a gas on heating
➤ Evaporation / Boiling
III. Descriptive Type Questions A. Short Answer Questions
1. What is matter made up of?
➤ Matter is made up of tiny particles called atoms and molecules.
2. Define melting.
➤ Melting is the process by which a solid changes into a liquid on heating.
3. Define condensation.
➤ Condensation is the process by which a gas changes into a liquid on cooling.
4. Define physical change with an example.
➤ A physical change is a change in which the form of matter is changed but not its chemical identity.Example: Melting of ice.
5. Define chemical change with an example.
➤ A chemical change is a change in which a new substance is formed. Example: Burning of wood.
6. Define solidification.
➤ Solidification is the process by which a liquid changes into a solid on cooling.
7. What is expansion?
➤ Expansion is the increase in the size or volume of a substance when heated.
B. Long Answer Questions
1. How are particles arranged in solids?
➤ In solids, particles are tightly packed in a fixed, regular pattern with very little interparticle space. They can only vibrate in place.
2. How are particles arranged in liquids?
➤ In liquids, particles are closely packed but not in a fixed position. They can slide over one another, allowing liquids to flow.
3. How are particles arranged in gases?
➤ In gases, particles are very loosely packed and move freely in all directions. They have a lot of interparticle space.
4. Explain how matter contracts.
➤ Matter contracts when it is cooled. The particles come closer together, reducing the size or volume of the substance.
5. Using appropriate examples, distinguish between physical and chemical changes.
| Physical Change | Chemical Change |
| ————————— | ————————– |
| No new substance is formed. | A new substance is formed. |
| Reversible in nature. | Usually irreversible. |
| Example: Melting of ice. | Example: Rusting of iron. |
