Acid Bases: pH Scale

What does the pH scale measure?

• Volume of a substance

• Acidity or alkalinity of a substance

• Weight of a substance

• Temperature of a substance

What is the range of the pH scale?

• 1 to 15

• 0 to 10

• 0 to 14

• 5 to 20

What pH value is considered neutral?

• 10

• 7

• 8

• 5

What pH value indicates an acidic solution?

• Between 6 and 8

• Below 7

• Exactly 7

• Above 7

What pH value indicates a basic solution?

• pH value less than 7

• pH value equal to 7

• pH value between 5 and 6

• pH value greater than 7

What is the pH value of pure water?

• 10

• 7

• 5

• 8

How does the concentration of hydrogen ions relate to the pH value?

• Directly related

• Inversely related

• Exponential relationship

• No relation

Explain the concept of logarithmic scale in relation to the pH scale.

• Logarithmic scale means each unit change in pH represents a hundredfold change in acidity or alkalinity.

• Each unit change in pH represents a tenfold change in acidity or alkalinity.

• Logarithmic scale is only applicable to basic solutions, not acidic ones.

• Logarithmic scale is linear and does not represent any specific change in acidity or alkalinity.

What is the significance of pH in everyday life?

• pH has no impact on everyday life

• pH helps determine the properties and effectiveness of substances, as well as ensuring safety and quality in many products.

• pH is only relevant in scientific experiments

• pH is only used in niche industries

How can pH be used to determine the acidity or basicity of a substance?

• By measuring the pH value of a substance, we can determine whether it is acidic or basic.

• By observing the color of the substance

• By tasting the substance directly

• By listening to the sound the substance makes