Chemistry · Science General
States of Matter
2,682 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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water can turn into a solid form
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water is a type of solution
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it can dissolve many other molecules
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it solves most of the world's environmental problems
C
Correct answer
Explanation
Water is called the universal solvent because its polar molecular structure allows it to dissolve a wider variety of substances than almost any other liquid.
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physical change
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chemical change
A
Correct answer
Explanation
Melting is a change of state from solid to liquid. Since the chemical identity of the marshmallow remains the same, it is a physical change.
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Condensation
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Evaporation
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Liquidation
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Precipitation
B
Correct answer
Explanation
Evaporation is the process by which a liquid turns into a gas at its surface.
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Matter
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Solid
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Volume
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Liquid
A
Correct answer
Explanation
Matter is defined as anything that has mass and occupies space (volume).
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chemical
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mechanical
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thermal
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sound
C
Correct answer
Explanation
Melting occurs when a solid absorbs thermal energy, causing its particles to move more freely and transition into a liquid state.
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evaporation
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condensation
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sublimation
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deposition
D
Correct answer
Explanation
Deposition is the phase transition in which gas transforms directly into a solid without passing through the liquid phase.
C
Correct answer
Explanation
Plasma is widely considered the fourth state of matter, following solids, liquids, and gases. It consists of ionized gas where electrons are stripped from atoms.
D
Correct answer
Explanation
Gases do not have a definite shape or a definite volume; they expand to fill the entire container they are in. Solids and liquids have definite volumes.
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Chemical Properties
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Chemical change
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Physical Change
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Physical Properties
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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.