1. Characteristics of Acid and base.
• acids ,are sour/tart, feel like water, may sting when touched, react strongly with metals, conduct electricity since they ionize in solutions, and turn blue litmus paper red.
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• Bases, are bitter, slippery and smooth, do not react with metals usually, conduct electricity, and turn red litmus paper blue.
2. How do Acids and base relate to pH scale .
Acids →When H+ ions dissociates in a solution, acids area created
→pHs of less than 7 indicate acidity,
Base →Bases are created from the dissociation of OH− in solution.
→ pH of greater than 7 indicates a base
3. How buffers work in living organisms and their importance.
• Buffer is a chemical substance that maintains the pH of living organisms.
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• This means that they are able to resist certain changes in the body's pH level ( ,for example...if there is a sudden addition of acid/base in the body, they are able tomaintain stable internal invironment)
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• Therefore, buffers are necessary for survival of living cells.