What Makes Something Acidic?

The video explains what acids are, their natural occurrence, and how they were historically discovered. It covers the formation of acids and alkalis, the reactions of acids in water, and the pH scale's role in measuring acidity. The video also discusses the use of indicators to determine pH levels and the logarithmic nature of the pH scale. It concludes with a summary of key points about acids, indicators, and the pH scale.

What is a common characteristic of acids?

• They are colorless.

• They are odorless.

• They taste sour.

• They taste sweet.

Which gas was historically named as the 'acid maker'?

• Hydrogen

• Oxygen

• Carbon Dioxide

• Nitrogen

What ion is formed when acids dissolve in water?

• Hydroxide ion

• Sulfate ion

• Hydronium ion

• Chloride ion

What is the pH of neutral water?

• pH 0

• pH 7

• pH 14

• pH 4

How many buckets of neutral water are needed to change the pH of acid rain from 4 to 5?

• 5 buckets

• 1 bucket

• 10 buckets

• 9 buckets