topic

THE CHARACTERISTIC OF BASE

BASIC COMPETENCE

• CLASSIFYING AND COMMUNICATING THE CHARACTERISTICS OF BASE

INDICATOR

• STUDENT ARE ABLE TO IDENTIFY THE CHARACTERISTICS OF BASE

EQUIPMENT AND MATERIAL

• AMMONIA

• LITMUS PAPER

• BEAKER GLASS 100 ML

• ORANGE JUICE

• WATER

PROCEDURE

1.Prepare some kind of solution in the beaker glass with the:a. orange juiceb. ammoniac. water

2. Immerse blue litmus paper into each solution? 3. Observe what will happen the change of the blue litmus

paper !4. Write the color change of the litmus paper on the table?5. Repeat the procedure point 1 up to point 3 by using the

red litmus paper 6. Write the color change of the litmus paper on the table?

The table of litmus paper color changes

Litmus paper Orange juice ammonia water

Red

blue

Table change of litmus paper colour

Litmus paper Orange juice ammonia water

Red Red blue Red

blue red Blue blue

The table of litmus paper color changes

ANALYSIS

• Is there any litmus paper color change when the blue litmus paper is immersed into the orange juice?

• Is there any litmus paper color change when the blue litmus paper is immersed into the ammonia?

• Is there any litmus paper color change when the blue litmus paper is immersed in to the water?

CONCLUSION

1. If the blue litmus paper is immersed into the orange juice, the color of the litmus paper will change from blue to red

2. If the blue litmus paper is immersed into the ammonia, the color of the litmus paper will not change

3. If the blue litmus paper is immersed into water, the color of the litmus paper will not change.

4. If the red litmus paper is immersed into the orange juice, the color of the litmus paper will not change

5. If the red litmus paper is immersed into the ammonia, the color of the litmus paper will change from red to blue

6. If the red litmus paper is immersed into water, the color of the litmus paper will not change.