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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A solid becomes a liquid
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A Liquid becomes a solid
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Sublimation
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When a gas becomes a liquid
D
Correct answer
Explanation
Condensation is the phase change where a substance transitions from a gaseous state to a liquid state, typically due to cooling.
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Liquid
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Not Possible
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Vaporization
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Sublimation
D
Correct answer
Explanation
Sublimation is the process where a solid transitions directly into a gas without passing through the liquid phase. An example is dry ice.
D
Correct answer
Explanation
The three primary states of matter commonly discussed in introductory science are solid, liquid, and gas.
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Stuff
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Atom
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Substance
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Element
D
Correct answer
Explanation
An element is a pure substance that consists of only one type of atom and cannot be broken down into simpler substances by chemical means.
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Being attracted to other molecules of a solid
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An inward pull among molecules of a liquid closer together
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An outward pull among atoms in a gas
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tense conversations with an awkward person.
B
Correct answer
Explanation
Surface tension is the result of cohesive forces between liquid molecules at the surface, which pull them inward and create a 'skin' effect.
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Gasses
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Liquids
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Solids
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Plasmas
A
Correct answer
Explanation
Gases are characterized by particles that are far apart, move freely, and have no fixed shape or volume, allowing them to expand to fill their container.
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Funnel
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Beaker
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Dropper
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Tongs
A
Correct answer
Explanation
A funnel is a tube with a wide top and narrow stem, used to guide liquid or powder into a small opening to prevent spilling.
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Evidence of a Chemical Change
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Evidence of a Physical Change
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Evidence of Evolution
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Evidence of Transpiration
A
Correct answer
Explanation
These phenomena are classic indicators that a chemical reaction has occurred, resulting in the formation of new substances. Physical changes generally do not involve these specific signs.
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Evaporation
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Condensation
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Precipitation
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Transpiration
A
Correct answer
Explanation
Evaporation is the phase change from liquid to gas. Condensation is the opposite, and precipitation refers to water falling from the atmosphere.
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Dissolved Oxygen
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Liquid Oxygen
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Pure Oxygen
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Mixed Oxygen
A
Correct answer
Explanation
Dissolved oxygen is a standard water quality metric that measures the amount of gaseous oxygen mixed into water, which is vital for aquatic life.
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Condensation
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Precipitation
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Evaporation
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Transpiration
A
Correct answer
Explanation
Condensation is the process where water vapor (gas) cools down and turns back into liquid water. Evaporation is the opposite process.
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to a large degree
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to a small degree
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no at all
B
Correct answer
Explanation
Water is a very weak electrolyte and undergoes self-ionization to a very small extent, producing a tiny concentration of H+ and OH- ions.
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Hydrogen Oxide
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Dihydrogen Monoxide
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Dihydrogen Oxygide
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Water
B
Correct answer
Explanation
According to IUPAC nomenclature for covalent compounds, H2O is named Dihydrogen Monoxide (two hydrogens, one oxygen). While 'Water' is the common name, the question asks for the chemical name.
C
Correct answer
Explanation
The human body is composed of approximately 60 to 70 percent water. This water is essential for various physiological processes, including temperature regulation and nutrient transport.
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parts per thousand
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parts per million
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parts per billion
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"Holy cow, that's a LOT!"
B
Correct answer
Explanation
Concentrations of trace substances, such as pollutants in water or chemicals in soil, are commonly measured in parts per million (ppm) to express very small ratios.