Daisies in STEM - Magic Potion

There is something very exciting about the idea of a making a magic potion. In particular if the potion can change its colors from deep-purple to bright-pink or to vivid-blue. Today we made pH indicator (magic potion) from purple cabbage and water. This is a very simple exercise and a great opportunity to learn about pH, a measure of acidity or alkalinity of a solution. It is interesting to know that acidic foods, like lemon or vinegar, taste sour, and alkaline foods like baking soda taste bitter. To make the pH indicator the girls tore red cabbage leaves into small pieces. The cabbage leaves were carefully placed in a food processor, boiling water was added, and the leaves were blended for

Daisies in STEM - Oobleck

The three major states of matter are solid, liquid and gas. The rule of thumb is that solids retain their shape, liquids do not hold their shape and adopt the shape of the vessel they are in, and gases do not hold their shape and are constantly moving. But some things around us do not behave according to these rules... To explore this further, we had a scavenger hunt where the girls identified each item they found as a solid, liquid or unknown. The girls correctly identified slime and honey as liquids, however ketchup and toothpaste were harder to define. Ketchup comes out of the bottle like liquid, but retains it's shape once it's on the plate. Toothpaste behaves the same way. Why? These ar

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