Acids and Alkalis

What are the properties of acids?

• Salty taste, ability to turn blue litmus paper red, and the ability to react with metals to produce carbon dioxide gas

• Sweet taste, ability to turn red litmus paper blue, and the ability to react with metals to produce oxygen gas

• Sour taste, ability to turn blue litmus paper red, and the ability to react with metals to produce hydrogen gas

• Bitter taste, ability to turn red litmus paper blue, and the ability to react with metals to produce hydrogen gas

What are the properties of alkalis?

• Solubility in oil, pH less than 7, ability to neutralize bases

• Insolubility in water, pH greater than 7, ability to neutralize acids

• Solubility in water, pH greater than 7, ability to neutralize acids

• Solubility in water, pH less than 7, ability to neutralize acids

Why is it important to handle acids and alkalis with caution?

• To avoid harm or injury

• To make them more powerful

• To create a chemical reaction

• To improve their effectiveness

What are some safety precautions to take when handling acids?

• Handle without any protective gear

• Neutralize spills with water

• Wear protective clothing, gloves, and goggles; handle in a well-ventilated area; neutralize spills with a base or appropriate neutralizing agent

• Handle in a closed, unventilated area

What are some safety precautions to take when handling alkalis?

• Handle without any protective gear

• Handle in a closed, poorly ventilated area

• Wear protective gear such as gloves, goggles, and a lab coat, handle in a well-ventilated area, and neutralize spills with a weak acid.

• Neutralize spills with water

What is the pH range of acids?

• 1 to 10

• 7 to 14

• 2 to 8

• 0 to 6.9

What is the pH range of alkalis?

• 1-7

• 0-7

• 0-14

• 7-14

What are some common examples of acids found in everyday life?

• Citric acid, acetic acid, carbonic acid

• Oxalic acid, butyric acid, formic acid

• Nitric acid, phosphoric acid, hydrofluoric acid

• Lactic acid, hydrochloric acid, sulfuric acid

What are some common examples of alkalis found in everyday life?

• vinegar, lemon juice, orange juice

• bleach, ammonia, drain cleaner

• coffee, tea, cola

• soap, toothpaste, baking soda

How can you identify an alkali using indicators?

• By tasting it

• By listening to the sound it makes

• By smelling it

• By observing the color change of indicators such as litmus paper and phenolphthalein.