1-¿Cuáles son las 5 formas más comunes de identificar un cambio químico? 2-Escribe tres ejemplos de cambios químicos en los que se observe un cambio temperatura sin aplicar calor.
3-Escribe tres ejemplos de cambios químicos en los que se observe un cambio de color

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

Although respiratory organs vary across different organisms, they all contain respiratory surfaces that have a large surface area and are extremely thin. explain why having an extremely thin respiratory surface with a large surface area is advantageous for the process of gas exchange

Convert the temperature of dry ice, –77 ∞c, into degrees fahrenheit and kelvin.