Biology College

which combination of the state and a substance in that state is correct

Answers

Answer 1

Answer:

Change of state of matter: In physics, we call the process of changing matter from one state to another state as change of state of matter. They can be transformed into each other, so there are 6 kinds of physical changes: melting, solidification, vaporization, liquefaction, sublimation, and sublimation. Other states of matter such as: plasma state, super solid state, neutron state, Bose-Einstein condensed state, soft matter, etc.

Explanation:

1. State of matter: Since a large number of molecules that make up a substance are constantly performing irregular thermal motion, and different molecules perform thermal motion at different speeds, three states of matter are formed: solid, liquid, and gaseous. In science, we call the state of matter the state of matter.

2. How to judge what kind of state change is happening: The key is to find the two states of the substance before and after the change in state, and then compare them according to the definition, and then you can draw the correct conclusion.

Three states, six changes and endothermic hveat release: Physical change

Melting: solid → liquid (endothermic)

Solidification: liquid→solid (exothermic)

Vaporization: (boiling and evaporation): liquid → gas (endothermic)

Liquefaction: (two methods: compressing volume and lowering temperature): gas → liquid (exothermic) Sublimation: solid → gas (endothermic)

Sublimation: gas state → solid state (exothermic)

(Note: The "heat" of "endothermic" and "exothermic" mentioned here refers to heat, not to thermodynamic concepts such as temperature, internal energy, calorific value, and specific heat capacity. That is, "absorbed heat" and The abbreviation for "release of heat." In physics, heat cannot say "how much heat it contains" or "how much heat it has", but can only say "how much heat is absorbed" or "how much heat is released")

Which Combination Of The State And A Substance In That State Is Correct

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