TESTING AN OBJECT TO FIND THE PRESENT OF FAT IN THE FOOD ITEM

In this experiment you will see the presents of fat in the food item.

Materials:

A light bulb

1yellow color paper

One food item [example: butter]

 Instructions

 First put the paper on the bulb the paper would not be transparent. Now rub the butter on the paper and let it dry.

 Now you will see the paper is oily and now put the paper on the bulb.

You will observe that the paper is a bit transparent. If the paper does not becomes transparent it does not contains fat!!!


(Please review this experiment)

 

PROVING AIR NEEDS SPACE

In this experiment you are going to prove that air needs space.

Materials



Some wool or some paper

1glass

1bowl

Water

Instructions

Fill the bowl with water.

 Now put the wool or paper in the glass and make sure it does not fall when turned upside down.

 Now put the glass upside down and put it in the water. Make sure you do not tilt the glass. NO air bubbles are formed.

Now take the glass out. What do you observe? Is the wool wet?

What Happend?

When you put the glass into the water the glass is full of air. When you put the glass in the water the air does not allows the water to get in and the wool is dry. But if you tilt the glass the air in the glass escapes in the water and does air bubbles are formed. The water then enters the glass and makes the wool wet.

Thus we can prove air needs space.


(Please review this experiment)