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Sumario Resumen de exámen de química sobre materia, reacctivos y átomos $8.30   Add to cart
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Sumario Resumen de exámen de química sobre materia, reacctivos y átomos
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  • Course
  • Chemistry
  • Institution
  • ESO

Resumen, esquema visual de un examen de química sobre átomos, una parte de la tabla periódica, y muchos más temas, además contiene enlaces para mejor comprensión

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Document information

  • September 1, 2023
  • 1
  • 2023/2024
  • Summary

Subjects

  • materia
  • reactivos
  • mol
  • concentración
  • tabla perdiódica
  • átomo
  • orbitales
  • enlaces
  • reacciones

Written for

  • Secondary school
  • ESO
  • Chemistry
  • 4
All documents for this subject (16)

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Tamyaaa

Content preview

• compuestos (átomos compuestos--> FORMAS DE EXPRESAR
SUSTANCIA (propiedades características) H2O, CO2) LA CONCENTRACIÓN
1 MOL de C
• elementos (átomos aislados--> O2, He)

MOL: El núm
MATERIA en unidades
en gramos

• Homogéneas (disolución)--> Calentamiento a sequedad, Destilación
1 átomo de
MEZCLAS
1 mol de á

• Heterogéneas (se distinguen componentes)--> Filtración,
*Ar=masa at
Decantación
*Mr=masa m
Cambios físicos: sustancian no cambian, se
pueden volver a recuperar

Cambios químicos: se crea una nueva sustancia



*La masa siempre se conserva aunque el
volumen no




REACTIVOS
1ª Ley de la conservación de la masa
Reacciones químicas: A+B --> C+D (Lavoisier)

-> Las reacciones se producen mediante
choques con suficiente energía y con
2ª Ley de las proporciones definidas
orientación adecuada.
(Proust)




Mreactivos-->Mproductos



AJUSTAR REACCIONES

• Coeficientes estequiométricos

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