State Of Matter Trivia Quiz For 7th Grade
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Do you know everything about the states of matter? Take this state Of matter trivia quiz for 7th grade, and know if you have studied well or not. It is just a memory test where you can recall everything you have learned in the science chapter of states of matter. You can take the quiz, choose your answers, and we will reveal the results in the end. All the best! You can share it with 7th-grade students or friends and see how good is their knowledge.
- 1.
How many states of matter are there?
- A.
5
- B.
2
- C.
3
- D.
4
Correct Answer
A. 5Explanation
The five states of matter are:
Solid: Matter with a definite shape and volume, where particles are closely packed and vibrate in place.
Liquid: Matter with a definite volume but no definite shape, where particles are close but can move past each other.
Gas: Matter with no definite shape or volume, where particles are far apart and move freely.
Plasma: An ionized state of matter with free electrons and ions, found in stars and neon lights.
Bose-Einstein Condensate (BEC): A state of matter formed at near absolute zero, where particles occupy the same space and quantum state, behaving as a single quantum entity.Rate this question:
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- 2.
The conversion of matter from solid state to liquid state is called
- A.
Vaporization.
- B.
Melting
- C.
Evaporation
- D.
Condensation
Correct Answer
B. MeltingExplanation
Melting is the correct answer because it refers to the process by which a substance changes from its solid state to its liquid state. This occurs when heat is applied to a solid, causing its particles to gain enough energy to break free from their fixed positions and move more freely, resulting in the substance becoming a liquid.Rate this question:
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- 3.
Which of the following does not take the shape of the container it is in?
- A.
A pencil.
- B.
Oil
- C.
Water.
- D.
Air
Correct Answer
A. A pencil.Explanation
A pencil does not take the shape of the container it is in because it is a solid object with a fixed shape. Unlike liquids such as oil and water and gasses like air, solids have a fixed shape regardless of the container they are placed in.Rate this question:
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- 4.
I can easily compress the water in a jar to reduce its volume.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Water is an incompressible substance, meaning that its volume cannot be easily reduced by applying pressure. Unlike gasses, which can be compressed, water molecules are tightly packed together and have very little empty space between them. Therefore, it is not possible to compress water in a jar to reduce its volume easily.Rate this question:
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- 5.
When water evaporates, it turns into solid.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Water does not turn into a solid when it evaporates. Evaporation is the process by which water changes from a liquid state to a gas state. When water evaporates, it turns into water vapor, not a solid.Rate this question:
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- 6.
Which state of matter spreads itself thinner and thinner until it fills the entire volume of the container irrespective of its size?
- A.
Liquid
- B.
Gas
- C.
Solid
- D.
All of the above
Correct Answer
B. GasExplanation
Gas has the ability to spread itself thinner and thinner and fill the entire volume of the container. In the gas state, the particles are highly energetic and move freely, causing them to spread out and fill the available space.Rate this question:
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- 7.
Water conforms in all directions to take the shape of the container it is in.
- A.
False.
- B.
True
Correct Answer
B. TrueExplanation
Water is a liquid, and liquid particles can slide against each other easily. This allows water and other liquid particles to take the shape of their containers.Rate this question:
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- 8.
Select the correct statement:
- A.
An ice cube becomes gas at its melting point.
- B.
An ice cube becomes liquid at its melting point.
- C.
Both of the above
- D.
None of the above
Correct Answer
B. An ice cube becomes liquid at its melting point.Explanation
At its melting point, an ice cube undergoes a phase change from a solid to a liquid. This is because the melting point is the temperature at which the solid ice gains enough energy to break its rigid structure and transition into a more fluid state. Therefore, the correct statement is that an ice cube becomes liquid at its melting point.Rate this question:
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- 9.
Choose the right statement. In solids, the molecules are packed the closest together. In gasses, the molecules are spread out the most. In liquids, the molecules are packed closer together.
- A.
Statement a alone is right.
- B.
Statement b alone is right
- C.
All the above statements are right.
- D.
None of the above is right.
Correct Answer
C. All the above statements are right.Explanation
The correct answer is "All the above statements are right." This is because the statements in options a, b, and c are all individually correct. In solids, the molecules are packed the closest together, in gasses, the molecules are spread out the most, and in liquids, the molecules are packed closer together. Therefore, all three statements are true, making option d incorrect.Rate this question:
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- 10.
Which of the following is considered a state of matter beyond solid, liquid, and gas?
- A.
Plasma
- B.
Bose-Einstein Condensate
- C.
Both A and B
- D.
None of the above
Correct Answer
C. Both A and BExplanation
While most are familiar with the three classical states of matter—solid, liquid, and gas—there are additional states that are less commonly discussed outside of physical sciences:
Plasma: Often considered the fourth state of matter, plasma is an ionized state of matter similar to gas but with a key difference: it contains free ions and electrons which allow it to conduct electricity. Plasma is what stars are made of and is commonly found in neon signs and plasma TVs.
Bose-Einstein Condensate (BEC): This state of matter was predicted by Satyendra Nath Bose and Albert Einstein in the early 20th century but was first created in the laboratory in 1995. It occurs at temperatures very close to absolute zero, where atoms begin to occupy the same space and quantum state, essentially behaving as a single quantum entity rather than as independent particles.Rate this question:
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Oct 23, 2024Quiz Edited by
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Expert Reviewed by
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Jan 05, 2010Quiz Created by
Abdali Same
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