Bi-weekly Demos

Explore science from the comfort of your home! These short STEM-focused demos are curated for kids of all ages to follow along and learn.

Check out STEM x Stella’s channel

Unique, engaging, and educating videos uploaded every other week.

LATEST VIDEO

What are emulsions?

Uploaded: 10/13/24

Hi there! This video is about what emulsions are and the science behind them. Let's get mixing!

All Demos

#1 – Can we walk on water?

[2:30]

#2 - Why do we sweat?

[1:17]

#3 - What are emulsions?

[0:49]

#4

 Follow along!

Even more detailed and comprehensive explanations for each corresponding demo

 

  • Supplies:

    • Penny

    • Plastic water bottle

    Steps:

    • Poke a hole in the bottle cap with a pencil

    • Slowly add water drops onto the penny

    • Count how many drops you can get onto the penny before they roll off!

    Concepts learnt:

    • Basic properties of water: cohesion, adhesion, and surface tension

    • Water striders are able to effortlessly glide across surfaces of water because of the water's unique properties

  • Supplies:

    • Ice cube

    Steps:

    • Leave the ice cube out, and watch it melt

    • Think about why ice melts

    Concepts learnt:

    • Definition of exothermic and endothermic energy

    • Many phenomena that occur around us can be attributed to exothermic and endothermic reactions

  • Supplies:

    • Water

    • Oil

    Steps:

    • Mix equal amounts of water and oil in a cup

    • Observe what happens to the oil and water after mixing

    Concepts learnt:

    • Polarity of molecules

    • Definition of emulsion