We are continuing our Dinosaur Unit study, and today, we are rescuing frozen Dino eggs which were found by the young paleontologists during a recent trip to🇦🇶Antarctica.
To help with this kids science experiment, we are using a child-sized hammer, salt, and warm water.
Fill the balloons with water and place them into a freezer. Take this opportunity to discuss physics and the state of the matter: how the water changes from liquid to a solid state under lower temperatures.
With the help of warm water and salt, our dino friends are emerging.
Science⚗️Mystery Revealed: salt is a great ice melter because it causes “freezing point depression” ~ meaning that salt helps in lowering the freezing point and, consequently, the melting point of water (the main component of snow and ice). Generally, water freezes at 0°C or 32°F; but by using salt, that freezing point can be lowered which forces the ice to melt and prevents the water from freezing or re-freezing. Please note that salt alone can not melt ice; salt must be combined with water first to start the melting process. When salt touches water, it starts to dissolve, thus lowering the freezing point and melting the surrounding ice. Voila!
For more Dino inspired activities, see our entire Unit Study here.