CBSE Book Class 8 Science Activity What Makes Water

CHEMICAL EFFECTS OF CURRENT

Neera was reading a book on science experiments. It said that water was made up of two gases-hydrogen and oxygen. Neera got herself a glass of water and looked at it carefully. 'How is that possible'? Wondered Neera. Water is a liquid but hydrogen and oxygen are gases. 

Next day she asked her science teacher about it. The science teacher asked her to collect a few things from home. The teacher told her that they will be doing an experiment to understand this better. You too join in to unravel the mystery about water.

Two used cells (torch cells), a 9V battery, two metre copper wire, plastic container, hammer, plaster of paris, two empty test tubes of equal size.

1.  Remove the carbon rods from the used cells. (Ask an adult to help you with this)

2.  Make holes at the bottom of the plastic container to fit the carbon rods. 

3.  Use plaster of paris paste (by mixing it in water) to block leakage of water where the carbon rods are fixed.

4.  Fill the bowl upto 3/4th with water.

5. Connect the wire to the ends of the carbon rods below the plastic container as shown.

Please refer to the link below - CBSE Class 8 Science Activity What Makes Water