Take vinegar, lemon juice, soapy water, baking soda in different vessels. Pur beetroot pieces in the vessels. Predict what happens. Verify your prediction by observing the changes. After 10 minutes, 30 minutes, 60 minutes record your observations. What do you conclude?

Do the following activities. Write down your observations. What do you conclude? (a) Mix chalk powder in water.

Do the following activities. Write down your observations. What do you conclude ? : Place a piece of candle in water.

What will happen if a decorative colour paper is dipped in water? Predict the possible changes. Verify your prediction by doing experiments and write down the steps of the process?

Do the following activities. Write down your observations. What do you conclude ? : Add some oil drops to a beaker of water.

Observing what happens . Hold a think long copper wire just inside the flame for about half a minute. What do you observe?

What will you do if a dog is after you? What will be your first reaction? Have you ever observed any change in your body when you afe afraid?

Take some water in a wide mouthed bowl. Put an iron nail in it. What do you observe ? Put an empty iron tin in that bowl. What do you observe ?Also try to observe whether a wooden piece floats on water. What happens when a wooden bowl is dipped in water ? what is your conclusion from the above activity?

Collect sweet potato, bottle, salt, and water. Take.a bottle full of water and add salt, then put.sweet potato inside the bottle. Observe for a few days. What happens? Note your observations. How can you prove that sweet potato is also a living thing?

Refer to the Activity 3 in the chapter. Start with distilled water. The LED would not glow. Add two drops of some acid to distilled water and check the glow of LED. Add two more drops and check the intensity of the glow. Repeat the activity 5 to 6 times by adding 2 drops of the same acid each time. Do you see any difference in the intensity of glow with increasing acid content of water? What can be inferred from the above observations? Repeat the entire activity by taking a solution of baking soda and adding drops of it to distilled water instead of acid. Write differences and similarities. (AS_(3),AS_(1))