Students explore materials engineering by modifying the material properties of water. Specifically, …
Students explore materials engineering by modifying the material properties of water. Specifically, they use salt to lower the freezing point of water and test it by making ice cream. Using either a simple thermometer or a mechatronic temperature sensor, students learn about the lower temperature limit at which liquid water can exist such that even if placed in contact with a material much colder than 0 degrees Celsius, liquid water does not get colder than 0 °C. This provides students with an example of how materials can be modified (engineered) to change their equilibrium properties. They observe that when mixed with salt, liquid water's lower temperature limit can be dropped. Using salt-ice mixtures to cool the ice cream mixes to temperatures lower than 0 °C works better than ice alone.
This seminar is designed to be an experimental and hands-on approach to …
This seminar is designed to be an experimental and hands-on approach to applied chemistry (as seen in cooking). Cooking may be the oldest and most widespread application of chemistry and recipes may be the oldest practical result of chemical research. We shall do some cooking experiments to illustrate some chemical principles, including extraction, denaturation, and phase changes.
In this lesson, students explore the states of matter by creating ice …
In this lesson, students explore the states of matter by creating ice cream in a bag. They'll observe how liquids transform into solids through the process of freezing, while also learning about the properties of solids and liquids. By manipulating ingredients and observing temperature changes, students will gain a hands-on understanding of the scientific principles behind phase transitions. This activity encourages curiosity and critical thinking as students engage with fundamental concepts in a fun and delicious way.
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