Scientific Notation Quiz

What is the main purpose of using scientific notation in chemistry?

• To make calculations more complex

• To simplify the representation of very large and small numbers

• To increase the number of significant figures

• To avoid using decimals

If a number in scientific notation has a positive exponent, what does it indicate about the decimal point?

• The decimal point moves to the left

• The decimal point remains unchanged

• The decimal point is removed

• The decimal point moves to the right

What is the correct scientific notation for the number 4870?

• 4.870 x 10^3

• 4.87 x 10^3

• 4.87 x 10^2

• 48.7 x 10^2

When converting a number with a negative exponent in scientific notation to its regular form, what happens to the decimal point?

• It is removed

• It stays in the same position

• It moves to the left

• It moves to the right

What is the first step in ensuring a number is in correct scientific notation?

• The number must be less than 10

• The decimal must be after the first digit

• The exponent must be positive

• The exponent must be negative

How do you handle exponents when multiplying numbers in scientific notation?

• Subtract the exponents

• Multiply the exponents

• Divide the exponents

• Add the exponents

What is the result of multiplying (2.4 x 10^-3) by (1.8 x 10^5)?

• 4.32 x 10^2

• 4.32 x 10^8

• 4.3 x 10^8

• 4.3 x 10^2

When dividing numbers in scientific notation, what is the rule for handling exponents?

• Multiply the exponents

• Add the exponents

• Subtract the exponents

• Divide the exponents

What happens to the exponent when you move a negative exponent from the denominator to the numerator?

• It doubles

• It becomes zero

• It remains negative

• It becomes positive

What is the correct scientific notation for the result of dividing (1.8 x 10^5) by (2.4 x 10^-3)?

• 0.75 x 10^7

• 7.5 x 10^7

• 0.75 x 10^8

• 7.5 x 10^8