Interactive Chemistry Worksheet
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What is the pH range of acidic solutions?
Which of the following is a property of bases?
Neutralization reaction between an acid and a base produces:
Complete the sentence: An acid turns blue litmus paper __________, while a base turns red litmus paper __________.
Complete the neutralization reaction: HCl + NaOH → __________ + __________
The pH of a neutral solution is __________.
Identify the nature of solutions with the following pH values:
Classify these pH values:
pH = 2:
pH = 9:
pH = 7:
pH = 12:
Mark the following statements as True or False:
Match the substance with its correct classification:
| Substance | Classification |
|---|---|
| Vinegar | |
| Baking Soda | |
| Table Salt | |
| Soap |
Explain why acids and bases are considered opposites in terms of their chemical properties.
Sample Answer: Acids and bases are considered opposites because they neutralize each other. Acids donate H⁺ ions (protons) while bases accept H⁺ ions. When mixed in correct proportions, they cancel each other's properties, producing salt and water. They also have opposite effects on indicators: acids turn blue litmus red while bases turn red litmus blue.