A continuación se escribe un procedimiento de un experimento químico para la elaboración de yogurt (describe procedures for chemistry or physics experiments):
- Heat 1 liter of milk at 85 ºC for 30 minutes.
- Turn off the heat and leave the milk cooling until it is lukewarm (60 ºC).
- Separate the milk into 4 portions of 250 ml, which will be placed in labelled jars, adding 1 tablespoon of whole milk to each.
- Place in 3 jars different sugars. In one of the jars, do not put sugar, because it will serve as a control.
- Immediately measure the pH of the 4 vials using a pH indicator tape.
- When the temperature of the jars is around 44ºC, add 0.5 tablespoons of commercial yogurt to the 4 jars.
- Don't forget to cover the jars and leave them in a warm place overnight.
- The next day, examine the consistency of the yogurt in each of the 4 jars, as well as its pH.
- Record the results and make a discussion of them.
Normas de seguridad en un laboratorio químico
- El espacio debe contar con buena ventilación e iluminación.
- Todas las prácticas deben realizarse con la supervisión de un profesor experto.
- Se deben seguir todas las instrucciones que diga el profesor.
- Se deben conocer las medidas a tomar en caso de una emergencia.
- Se deben utilizar los equipos apropiados para cada experimento.
Puedes aprender más sobre los instrumentos de laboratorio en: https://brainly.lat/tarea/1220076
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