Understanding Water Expansion and Volume Calculation

The video explains how water expands by 9% when frozen and demonstrates how to calculate the new volume of ice from a given volume of water. It involves converting percentages to fractions, simplifying fractions, and finding a common denominator to add fractions, resulting in the final volume expressed as a fraction.

What happens to most liquids when they are cooled?

• They expand.

• They shrink.

• They remain the same.

• They evaporate.

By what percentage does water expand when it freezes?

• 5%

• 7%

• 11%

• 9%

If you start with 1/3 gallon of water, what is the first step to find the volume of ice?

• Multiply by 2

• Add 9% of the original volume

• Subtract 9% of the original volume

• Divide by 3

How can 9% be expressed as a fraction?

• 1/100

• 9/10

• 9/100

• 1/9

What is the expanded volume of 1/3 gallon of water when expressed as a fraction?

• 1/3 + 3/100

• 1/3 + 1/9

• 1/3 + 9/100

• 1/3 + 1/100

What is the least common multiple of 3 and 100?

• 400

• 300

• 200

• 100

How do you convert 1/3 to a fraction with a denominator of 300?

• Multiply by 10

• Multiply by 3

• Multiply by 30

• Multiply by 100

What is 3/100 expressed with a denominator of 300?

• 300/300

• 30/300

• 3/300

• 9/300

What is the final volume of ice expressed as a fraction?

• 109/300

• 100/300

• 9/300

• 1/3

Why is it important to find a common denominator when adding fractions?

• To ensure the fractions can be added

• To simplify the fractions

• To make the fractions larger

• To convert fractions to decimals