# data[].attributes.body
substances often undergo changes that make them have a dramatically different appearance, even though the chemical composition of the substance remains unchanged

https://study.com/academy/lesson/physical-change-definition-properties-examples.html

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A chemical change is a process where one or more substances are altered into one or more new and different substances.

https://www.thoughtco.com/definition-of-chemical-change-604902

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Density is a measure of mass per unit of volume

https://www.sciencedaily.com/terms/density.htm

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Melting is the process by which a substance changes from the solid phase to the liquid phase.

https://www.thoughtco.com/definition-of-melting-604568

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Freezing, or solidification, is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point.

https://en.wikipedia.org/wiki/Freezing

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sublimating material changes from a solid to a gas, it never passes through the liquid state

https://study.com/academy/lesson/what-is-sublimation-in-chemistry-definition-process-examples.html

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Condensation is the process by which water vapor in the air is changed into liquid water.

https://study.com/academy/lesson/what-is-condensation-definition-examples-quiz.html

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Evaporation is the process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and/or pressure.

https://study.com/academy/lesson/what-is-evaporation-definition-examples-quiz.html

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A solid is a state of matter characterized by particles arranged such that their shape and volume are relatively stable.

https://www.thoughtco.com/definition-of-solid-604648

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The liquid state of matter is an intermediate phase between solid and gas

https://www.livescience.com/46972-liquids.html

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A gas is defined as a s​tate of matter consisting of particles that have neither a defined volume nor defined shape.

https://www.thoughtco.com/definition-of-gas-604478

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Atoms are the basic units of matter and the defining structure of elements.

https://www.livescience.com/37206-atom-definition.html

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Matter is anything that has mass and occupies space

http://www.chem4kids.com/files/matter_intro.html