Question

Write an activity to show current passes through water

Answer 1

What you need

small LED light (you can buy this or get it from an old Christmas string light decoration. 
I got mine from this flashlight keychain)

2 small button batteries

copper wire or electrical wires (I used electrical wires with alligator clips)

scotch tape

small container

tap water

distilled water (you can use bottled ones or make your own distilled water)

adult supervision

Steps

Fill the small container with tap water.

Using the electrical wires, connect the LED light and batteries to build an open simple circuit (a circuit with an open end).

Dip the two open ends into the water.

Now, repeat the experiment using the exact same setup, but this time, instead of using tap water, use distilled water.

Using tap water, you should be able to complete the circuit and the LED bulb lights up.

Answer 2

Answer:

take out carbon rod carefully remove to discard cells clean there metal caps with Sandpaper wrap copper wire around the metal caps to of the carbon rods and join them to battery when we call these two rods electrodes pour cap full of water in a glass or plastic brown add a tea spoon full of of salt or a few drops of lemon juice to water to make it more conducting now immerse the electric rods in this solution make sure that the metal cap of carbon rods or outside the water weight for 2-3 minutes observe the electrodes carefully do you notice any gas Bubbles near the electrodes can we call the change taking place in the solution a chemical change recall the definition of a chemical change that you learnt in class 7th

Explanation:

Hope it will help you please mark me as brain list plz and thank my answer a