INDICATER!!

Acid or Base??


Materials:
15ml unsweetened grape juice
Water
1 Teaspoon baking soda
Vinegar
3 glasses

Instructions

Line up the three glasses in a line.


Pour water into the 1st glass, baking soda into the second glass and vinegar into the third glass.


Now, add some unsweetened grape juice to all the glasses.


Observe: Water gets the colour of the grape juice, which means water is neutral. When grape juice is added to baking soda the colour changes into green indicating it is a base. When the juice is added to vinegar the colour changes to red indicating it is an acid

ACID OR BASE

You know what is Ph paper right? Well litmus paper is used to find whether an object is an acid or base. So in this experiment you will make a solution through which you can come to know whether it is an acid or a base!

Materials:

2 teaspoon red cabbage juice powder

1 test tube [For storing the solution]

Water half of the container

1pipet or a dropper

Some objects to test, such as: lemon juice, salt, soap, a drop of coke or Pepsi

Making solution

 Fill the cup about three-fourth water and add 2 teaspoon red cabbage powder. And stir it.

Here your solution is ready. Now follow the steps bellow to use it

How to use the solution?

Now place an object on a plate.

Now use the pipette or a dropper to pick up a drop of the solution you just made, and drop it on the object.

         

The liquid changed color. If the liquid changes to light pink or red it is an acid. If the liquid changes to blue or green it is a base and if the liquid does not change color it’s a neutral.




(Please review this experiment)