Take some water in a pot and add few pieces of ice to it . Observe what happens . Why do we see the ice float on water ?

Write answers to the given question in your own words: Why do we see ice floating on water?

What is heart burn? Why do we take antacids to control it?

Let’s try this : Fix a bar magnet to a stand as shown in the figure. Let it become steady. Take another bar magnet near the hanging bar magnet. Observe what happens. Do the same again and again, exchanging the ends of a magnet. What do you see ?

What is the difference in ice, water and steam ?

Apparatus: Beakers. Chemicals: Samples of various metals , water. Procedure: Drop a piece of each of the metal in separate beakers filled with cold water. Which metal floats on water? Why?

Apparatus: Evaporating dish, Bunsen burner, etc. Chemicals: Sugar Procedure: Take some sugar in an evaporating dish and heat it with the help of a Bunsen burner. After some time you will see the formation of a burnt out black substance. Exactly what must have happened in this activity?

Take a long rubber band and cut it at one point . At one of its ends tie a clean washed stone or a 50g weight as shown in figure Now hold the other end of the rubber band and make a mark there . Keep the stone hanging in air and measure the length of the rubber band from the stone to the mark made earlier . now take water in a pot and hold the rubber band at such a height that the stone sinks in it . again measure the length of the rubber band up to the mark . : What is observed ?:

Take an empty can. Pour small quantity of water in it. Boil this water for a few minutes until the steam has driven out most of the air. Now close the can with the stopper tightly. Allow it to cool by pouring cold water over it. What do you observe ?