Chemical reactions
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Chemical reactions happen in laboratories and in nature.
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During a chemical reaction, the atoms within substances are rearranged and joined together in different ways.
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The substances that start a reaction are called reactants, and what they produce is called the product.
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the new substance can only be separated by another chemical reaction so simple separation
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methods like filtration evaporation and distillation won't work several things
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indicate that a chemical reaction might have taken place energy change
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color change the production of gas and the formation of a precipitate a solid produced
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when two solutions are combined the chemical reaction called combustion produces heat and
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light and new substances like smoke and ash for burning to take place there must be oxygen fuel
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such as wood and heat oxidation occurs when oxygen is added to a substance some metals
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like iron become rusty and food begins to discolor and break down fermentation takes
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place without oxygen. It involves breaking down a substance by adding microorganisms to it.
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This is how dough rises. Fermentation is also used to make yogurt from milk.
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The next time you sit in front of a fire or see an old rusty car,
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think of the chemical reactions involved and how everything in life is constantly changing.
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- Idioma/s:
- Subido por:
- Jose Roman G.
- Licencia:
- Todos los derechos reservados
- Visualizaciones:
- 163
- Fecha:
- 10 de mayo de 2020 - 23:05
- Visibilidad:
- Clave
- Centro:
- CP INF-PRI MESONERO ROMANOS
- Duración:
- 03′ 03″
- Relación de aspecto:
- 16:9 Es el estándar usado por la televisión de alta definición y en varias pantallas, es ancho y normalmente se le suele llamar panorámico o widescreen, aunque todas las relaciones (a excepción de la 1:1) son widescreen. El ángulo de la diagonal es de 29,36°.
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