Practice Title: Making Indicators acid bases and salts
Destination: Knowing substances that contain acid, alkali and salt with the use of natural indicators.
Tools and materials:
1. Vinegar
2. Baking soda
3. 4 pieces of plastic cups
4. Hibiscus leaves or purple cabbage
5. Sieve
Step work:
1. Create a hibiscus extract and store in plastic glasses.
2. Input 3 teaspoons of vinegar to the first plastic cups, 1 teaspoon of baking soda into the plastic
cup and 5 teaspoons of distilled water into plastic cups to three.
3. Input 3 -5 tablespoons hibiscus extract to each glass (glass first, second and third)
4. See the changes .....
5. If the substance changes color is red then the substance is acid
6. If the substance turned bluish purple substance is the base
7. If the substance does not change the color of the substance is salt
Conclusion:
From the trial results obtained information that the vinegar change the color to red, baking soda became bluish purple and distilled water color unchanged. It can be concluded that the acidic vinegar, baking soda is alkaline and distilled water is salt.
By Tio
In a chemistry lesson, we've heard the term acid, alkali and salt. How to find a solution is acidic, alkaline or salt can be known by a variety of ways, one by using litmus paper as indicator. In this experiment we will create a natural indicator, the indicator is dibuata of material obtained from natural or commonly known as a natural indicator.
Practice Title: Making Indicators acid bases and salts
Destination: Knowing substances that contain acid, alkali and salt with the use of natural indicators.
Tools and materials:
1. Vinegar
2. Baking soda
3. 4 pieces of plastic cups
4. Hibiscus leaves or purple cabbage
5. Sieve
Step work:
1. Create a hibiscus extract and store in plastic glasses.
2. Input 3 teaspoons of vinegar to the first plastic cups, 1 teaspoon of baking soda into the plastic
cup and 5 teaspoons of distilled water into plastic cups to three.
3. Input 3 -5 tablespoons hibiscus extract to each glass (glass first, second and third)
4. See the changes .....
5. If the substance changes color is red then the substance is acid
6. If the substance turned bluish purple substance is the base
7. If the substance does not change the color of the substance is salt
Conclusion:
From the trial results obtained information that the vinegar change the color to red, baking soda became bluish purple and distilled water color unchanged. It can be concluded that the acidic vinegar, baking soda is alkaline and distilled water is salt.
By Tio
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