Take the following substances and test them with Phenolphthalein and Methyl orange solutions. Draw a table and record your observations. Substances Orange, Tomatoes, Baking soda, Mineral water, Vinegar, Salt water, Shampoo, Washing soda.

Record your observations when you test the following substances with the indicators Phenolphthalein and Methyl Orange. Substances : Cold drink, Lemon Juice, Grape Juice, Bathing soap, detergent soap, Lime water and Sugar.

Test the following salt substances with red litmus and blue litmus papers. Record your observations in the table.

What changes in colour take place in the indicators Phenolphthalein and Methyl Orange when you test with the following substances. Spirit, Saliva, Cucumber, Ridgegourd, Kheerd, Butter milk, Milk.

Take white antacid powder with water in a test tube add methyl orange indicator to it. Which colour do you observe ?

Find out the chemical names and formulae for the following common household substances. a) common salt b) baking soda c) washing soda d) vinegar

Collect some salt substances with the help of your teacher. Make their salt solutions. Test the salt solutions with blue litmus and red litmus papers. Classify these salts and record your observations in the table.

Refer to the Activity 3 in the chapter. Start with distilled water. The LED would not glow. Add two drops of some acid to distilled water and check the glow of LED. Add two more drops and check the intensity of the glow. Repeat the activity 5 to 6 times by adding 2 drops of the same acid each time. Do you see any difference in the intensity of glow with increasing acid content of water? What can be inferred from the above observations? Repeat the entire activity by taking a solution of baking soda and adding drops of it to distilled water instead of acid. Write differences and similarities. (AS_(3),AS_(1))

Take five beakers with water. Take small quantities of sugar, salt, chalk powder, sand and sawdust. Add each material to separate beakers and stir. Observe the changes and record your observations in the given table.