Casa Grande Union High School District News Article


CG-BiologyJoannetPatunogOsmoticPressure20231114 (8)

(CGUHS) Ms. Patun-og’s Biology class conducted an egg lab experiment to prove that the selective permeable membrane of an egg demonstrates the process of diffusion and osmosis. In the selectively permeable membrane of an egg, the theory of the process of osmosis and diffusion is proven if the egg is placed in a solution with higher concentration of sucrose (sugar) rather than a lower concentration, the egg will decrease in weight. The students observed and recorded data of the weight of the egg from day 1 to day 2 and the volume of distilled water, vegetable oil, and corn syrup. After soaking eggs in vinegar for more than 24 hours, three (3) eggs were placed separately in a 250 ml of each liquid: Beaker 1 (egg with distilled water), Beaker 2 (egg with oil), and Beaker 3 (egg with corn syrup). Visit the Science Department at

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Our Non-Discrimination Commitment

Casa Grande Union High School District #82 prohibits discrimination in employment and educational programs based on race, color, religion, sex, age, disability, national origin, military status, genetic test information, sexual orientation or gender identity or expression and provides equal access to the Boy Scouts and other designated youth groups.

Questions, complaints, or requests for additional information regarding these laws may be forwarded to the designated compliance coordinator(s), Teena Daniels, District Title IX Coordinator, 1362 N. Casa Grande Ave, Casa Grande, AZ 85122, (520) 316-3360, or [email protected]

El Distrito Casa Grande Union High #82 prohibe la discriminación de empleo y programas educacionales basados en raza, color, religion, sexo, edad, descapacidad, origen nacional, estado militar, información de prueba genetica, orientación sexual o identidad de género, o expresion y provee acceso a los Boy Scouts y otros grupos juveniles designados.

Preguntas, quejas, o solicitudes para información adicional de acuerdo a estas leyes deben ser dirigidas a la coordinadora designada, Teena Daniels, District Title IX Coordinator, 1362 N. Casa Grande Ave, Casa Grande, AZ 85122, (520) 316-3360, [email protected]

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