Year 2

Rainbow Milk Experiment

Students demonstrated their enthusiastic attitude when conducting their experiments.

Do you want to know how to do this experiment?

All you need to prepare are a bowl, a glass of fresh milk, food colouring, dish soap, and a cotton swab.

Procedures:

1. Pour enough milk into the bowl to completely cover the bottom of the bowl.

2. Add two drops of food colouring to the center of the milk.

3. Dip the cotton swab in the dish soap.

4. Place the soapy end of the cotton swab in the middle of the food coloring in the milk. Hold it there for 10 seconds.

We learned from this experiment that the soap molecules interacted with the fats and protein in the milk, causing them to break apart and move around.

Lava Lamp Experiment

Do you think that lava is always hot and dangerous? Let’s check this out.

With the support from teachers, Year 2 students prepared reusable plastic bottles, water, vegetable oil, fizzing tablets, and food coloring.

The procedure is as follows:

First of all, pour water into the bottle. After that, pour the vegetable oil. Then, add a few drops of food coloring. Then drop the fizzy tablet into the bottle. Voila ………. here come the bubbly blobs! 

Do you know why oil floats on top of the water? Well, it is because oil is lighter than water.  Furthermore, when the students add the fizzy tablet, it sinks to the bottom and then starts to dissolve. As it dissolves, it makes gas, carbon dioxide. The air bubbles bring some colored water with them to the top. When the air comes out of the colored water blob, the water gets heavy and sinks.

Windmill Creation

This next experiment enabled us to explore gas.  Windmill is one of the simplest tools for enjoying science in a fun way. Year 2 students colored their paper windmill creatively and assembled it with minimal support. They then played with it in the school playground. Moreover, students understand how the “blades” of their windmill catch the wind and let it move round and round.