Chemistry · Science General
States of Matter
2,382 Questions
States of matter questions explore physical changes, evaporation, phase transitions, and the properties of liquids and gases. Topics cover density, cryosurgery, heavy water, and electrolytes. This foundational chemistry topic frequently appears in general science sections of SSC and railway exams.
Phase change mechanismsEvaporation and temperature effectsProperties of liquidsPhysical versus chemical changesElectrolytes and heavy water
States of Matter Questions
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Chemical Properties
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Chemical change
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Physical Change
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Physical Properties
B
Correct answer
Explanation
A process where matter changes into new substances with entirely different chemical properties is defined as a chemical change.
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Physical Change
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Chemical Change
A
Correct answer
Explanation
A physical change affects the form of a chemical substance, but not its chemical composition. No new substance is formed during a physical change.
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Physical Change
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Chemical Change
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Chemical Property
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Physical Property
D
Correct answer
Explanation
Physical properties are characteristics of matter that can be observed or measured without changing the chemical identity of the substance. Odor, mass, density, volume, color, and state are all physical properties.
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Chemical change!
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Um a fire? Hello safety rules
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Chemical Properties
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Physical change
A
Correct answer
Explanation
The release of heat (exothermic reaction) is a common indicator that a chemical change has occurred, as it suggests the formation of new bonds and a change in chemical energy.
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Physical Properties
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Physical change
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Chemical properties
A
Correct answer
Explanation
Physical properties are defined as characteristics that can be observed or measured without altering the chemical composition of the material.
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Physical change
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Chemical Change
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Buoyancy
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Weight
B
Correct answer
Explanation
A chemical change describes the process by which a substance undergoes a reaction to become a different substance with new properties.
A
Correct answer
Explanation
In a liquid, particles are close together but have enough energy to move past one another, which allows liquids to flow and take the shape of their container.
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Freezing
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Melting
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Addition of heat
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Thermal energy
A
Correct answer
Explanation
Freezing is the phase transition where a substance changes from a liquid to a solid. Melting is the reverse process, while addition of heat and thermal energy are concepts related to energy transfer rather than the state change itself.
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spontaneous combustion
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Condensation
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vaporization
B
Correct answer
Explanation
Condensation is the process where gas particles lose energy, slow down, and transition into a liquid state. Vaporization is the opposite process where a liquid turns into a gas.
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A CAT!!
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Gas
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Plasma
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Liquid
D
Correct answer
Explanation
A liquid has a definite volume because its particles are close together, but it takes the shape of its container because the particles can slide past each other. Gases have no definite shape or volume, and solids have both.
C
Correct answer
Explanation
Matter is defined as anything that has mass and takes up space (volume). Solids, liquids, and gases are all specific states of matter.
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Chemical Properties
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Physical Properties
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Physical Change
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Chemical Change
D
Correct answer
Explanation
A chemical change occurs when substances react to form entirely new substances with different chemical properties. Physical changes only alter the appearance or state of a substance without changing its identity.
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Chemical Change
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Physical Change
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Physical Property
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Chemical Property
A
Correct answer
Explanation
The souring of milk is caused by bacteria producing lactic acid, which changes the chemical composition of the milk. This is a classic example of a chemical change.
C
Correct answer
Explanation
Particles in a gas have more kinetic energy than those in a liquid or solid, allowing them to move freely and fill their container.
C
Correct answer
Explanation
A gas is a state of matter that has no fixed shape or volume, expanding to fill the container it is in.