Scientific Notation and Significant Figures

This video covers five essential topics for students preparing for chemistry or physics: memorizing the periodic table, mastering unit conversion, understanding the metric system, using scientific notation, and counting significant figures. Each section provides practical examples and tips to help students grasp these foundational concepts, which are crucial for success in these subjects.

Which element does the symbol 'O' represent on the periodic table?

• Oxygen

• Osmium

• Oxygenium

• Oganesson

If you have 36 feet, how many yards is that equivalent to?

• 9 yards

• 12 yards

• 24 yards

• 18 yards

How many square feet are there in 246 square inches?

• 1.7083 square feet

• 2.083 square feet

• 4.125 square feet

• 3.246 square feet

What does the prefix 'kilo' represent in the metric system?

• 10^3

• 10^2

• 10^4

• 10^5

Which of the following is equivalent to 1 nanometer?

• 1 x 10^-9 meters

• 1 x 10^-8 meters

• 1 x 10^-7 meters

• 1 x 10^-6 meters

Convert 4.2 x 10^3 to standard notation.

• 4,200

• 420

• 42,000

• 420,000

What is the scientific notation for the number 75,400?

• 7.54 x 10^6

• 7.54 x 10^5

• 7.54 x 10^4

• 7.54 x 10^3

How many significant figures are in the number 3,560?

• 3

• 2

• 4

• 5

In the number 50,400, which zeros are considered significant?

• Only the zero between 5 and 4

• Only the zero after 4

• All zeros

• None

What is the significance of zeros between non-zero digits in a number?

• They are significant only if followed by a decimal

• They are never significant

• They are significant only if preceded by a decimal

• They are always significant