Stemoto LogoStemoto
Back to Directory

Weigh it, Pour it (Smart Density & Liquid Weight Balance)

Source:

Pour equal volumes (200 ml) of Water, Cooking Oil, and Honey into beaker cups on a smart dual load cell balance scale. The scale reveals that 200 ml of Honey is MUCH heavier than 200 ml of Oil due to liquid density!

Categorisation

Props & Materials Required

  • •3 identical plastic beaker cups (200 ml volume)
  • •Liquids: Water, Cooking Oil, Honey / Heavy Syrup
  • •Dual HX711 load cell weight scale platform
  • •ESP32 controller board
  • •0.96-inch OLED display screen
  • •DFPlayer Mini MP3 module + 3W speaker

Step-by-Step Instructions

1

Measure Equal 200 ml Volumes

Pour exactly 200 ml of Water into Beaker A and 200 ml of Oil into Beaker B.

2

Place on Smart Balance Pans

Place Water on left scale pan and Oil on right scale pan.

3

Compare Weights on OLED Screen

Load cells read: Water = 200g, Oil = 180g! Scale tilts toward Water.

4

Density Science Audio Explanation

Speaker explains: 'Even though volumes are equal (200 ml), Water is DENSITY HEAVIER than Oil! Oil floats on top of water!'

Why It Works & Notes

Many children assume '1 Liter ALWAYS weighs 1 Kilogram'. Weighing equal 200 ml volumes of Oil (180g), Water (200g), and Honey (280g) on a digital load cell scale provides unforgettable proof of liquid density.