States of Matter
Q. In which state of matter do particles have the least amount of energy?
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A.
Solid
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B.
Liquid
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C.
Gas
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D.
Plasma
Solution
Particles in a solid have the least amount of energy compared to liquids, gases, and plasma.
Correct Answer: A — Solid
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Q. In which state of matter do particles move freely and are far apart? (2021)
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A.
Solid
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B.
Liquid
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C.
Gas
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D.
None of the above
Solution
In gases, particles move freely and are far apart compared to solids and liquids.
Correct Answer: C — Gas
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Q. What happens to the pressure of a gas if the volume is decreased while the temperature remains constant?
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A.
Increases
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B.
Decreases
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C.
Remains the same
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D.
Doubles
Solution
According to Boyle's Law, if the volume decreases and temperature is constant, the pressure increases.
Correct Answer: A — Increases
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Q. What happens to the volume of a gas when its temperature increases at constant pressure? (2020)
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A.
Volume decreases
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B.
Volume remains constant
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C.
Volume increases
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D.
Volume fluctuates
Solution
According to Charles's Law, the volume of a gas increases with an increase in temperature at constant pressure.
Correct Answer: C — Volume increases
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Q. What is the boiling point of water at standard atmospheric pressure?
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A.
100°C
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B.
0°C
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C.
50°C
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D.
150°C
Solution
The boiling point of water at standard atmospheric pressure is 100°C.
Correct Answer: A — 100°C
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Q. What is the effect of increasing pressure on a gas at constant temperature? (2014)
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A.
Volume increases
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B.
Volume decreases
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C.
No effect on volume
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D.
Gas becomes a liquid
Solution
According to Boyle's Law, increasing pressure on a gas at constant temperature results in a decrease in volume.
Correct Answer: B — Volume decreases
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Q. What is the effect of increasing temperature on the volume of a gas at constant pressure?
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A.
Volume decreases
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B.
Volume increases
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C.
Volume remains constant
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D.
Volume fluctuates
Solution
According to Charles's Law, increasing the temperature of a gas at constant pressure increases its volume.
Correct Answer: B — Volume increases
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Q. What is the primary characteristic of gases compared to solids and liquids? (2023)
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A.
Definite shape
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B.
Definite volume
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C.
High compressibility
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D.
Low density
Solution
Gases have high compressibility due to the large spaces between particles, unlike solids and liquids which have definite shape and volume.
Correct Answer: C — High compressibility
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Q. What is the primary difference between liquids and gases? (2023)
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A.
Shape
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B.
Volume
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C.
Compressibility
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D.
Density
Solution
Gases are highly compressible while liquids are not, due to the distance between particles in each state.
Correct Answer: C — Compressibility
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Q. What is the primary difference between solids and liquids in terms of particle arrangement? (2023)
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A.
Solids have loosely packed particles
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B.
Liquids have tightly packed particles
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C.
Solids have fixed shape and volume
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D.
Liquids have fixed shape but variable volume
Solution
Solids have a fixed shape and volume due to closely packed particles, while liquids take the shape of their container but have a fixed volume.
Correct Answer: C — Solids have fixed shape and volume
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Q. What is the primary reason for the high compressibility of gases?
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A.
Large intermolecular spaces
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B.
Strong intermolecular forces
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C.
Low temperature
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D.
High pressure
Solution
Gases are highly compressible due to large intermolecular spaces between particles.
Correct Answer: A — Large intermolecular spaces
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Q. What is the primary reason that gases can be compressed more than liquids or solids?
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A.
High density
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B.
Low density
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C.
Large intermolecular spaces
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D.
Strong intermolecular forces
Solution
Gases can be compressed more than liquids or solids because they have large intermolecular spaces.
Correct Answer: C — Large intermolecular spaces
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Q. What is the term for the energy required to change a substance from solid to liquid?
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A.
Heat of fusion
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B.
Heat of vaporization
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C.
Sublimation energy
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D.
Latent heat
Solution
The heat of fusion is the energy required to change a substance from solid to liquid.
Correct Answer: A — Heat of fusion
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Q. Which gas law relates pressure and temperature of a gas at constant volume?
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A.
Boyle's Law
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B.
Charles's Law
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C.
Gay-Lussac's Law
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D.
Avogadro's Law
Solution
Gay-Lussac's Law states that the pressure of a gas is directly proportional to its temperature at constant volume.
Correct Answer: C — Gay-Lussac's Law
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Q. Which of the following best describes the particles in a gas? (2015)
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A.
Tightly packed and vibrating
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B.
Close together and sliding past each other
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C.
Far apart and moving freely
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D.
Fixed in place
Solution
In gases, particles are far apart and move freely, allowing them to fill the container they are in.
Correct Answer: C — Far apart and moving freely
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Q. Which of the following processes involves a change from gas to liquid?
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A.
Sublimation
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B.
Condensation
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C.
Evaporation
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D.
Freezing
Solution
Condensation is the process where gas changes to liquid.
Correct Answer: B — Condensation
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Q. Which of the following states of matter has a definite shape?
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A.
Solid
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B.
Liquid
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C.
Gas
-
D.
Plasma
Solution
Solids have a definite shape due to closely packed particles that do not move freely.
Correct Answer: A — Solid
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Q. Which of the following states of matter has a definite volume but no definite shape?
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A.
Solid
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B.
Liquid
-
C.
Gas
-
D.
Plasma
Solution
Liquids have a definite volume but take the shape of their container.
Correct Answer: B — Liquid
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Q. Which of the following states of matter has the highest kinetic energy? (2022)
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A.
Solid
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B.
Liquid
-
C.
Gas
-
D.
Plasma
Solution
Plasma has the highest kinetic energy as it consists of ionized gases with free-moving charged particles.
Correct Answer: D — Plasma
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Q. Which of the following states of matter has the least intermolecular forces?
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A.
Solid
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B.
Liquid
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C.
Gas
-
D.
All are equal
Solution
Gases have the least intermolecular forces, allowing particles to move freely.
Correct Answer: C — Gas
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Q. Which state of matter has a definite shape and volume? (2017)
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A.
Solid
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B.
Liquid
-
C.
Gas
-
D.
Plasma
Solution
Solids have a definite shape and volume due to their closely packed particles.
Correct Answer: A — Solid
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Q. Which state of matter has the highest kinetic energy?
-
A.
Solid
-
B.
Liquid
-
C.
Gas
-
D.
Plasma
Solution
Plasma has the highest kinetic energy as it consists of ionized particles moving freely.
Correct Answer: D — Plasma
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