Chemistry Chapter 3.1: Measurement and Scientific Notation Quiz

In scientific notation, a number is written as the product of a coefficient and what?

• 10 raised to a power

• 100 raised to a power

• A fraction

• A square root

Which of the following is NOT a correct scientific notation?

• 5.6 x 10^3

• 0.56 x 10^4

• 56 x 10^2

• 5.6 x 10^2

What does the exponent in scientific notation indicate?

• The number of times the base is multiplied by itself

• The number of decimal places

• The size of the coefficient

• The unit of measurement

If a number is written as 3.5 x 10^2, what is the coefficient?

• 3.5

• 10

• 2

• 35

What is the result of dividing the coefficients in scientific notation?

• The coefficients are added

• The coefficients are subtracted

• The coefficients are multiplied

• The coefficients are divided

For addition and subtraction in scientific notation, what must line up?

• Coefficients

• Decimals

• Numerators

• Denominators

In scientific notation, what is necessary for subtraction without a calculator?

• Different exponents

• Same coefficients

• Same exponents

• Different coefficients

When multiplying in scientific notation, what happens to the exponents?

• They are subtracted

• They are added

• They remain the same

• They are divided

How do you evaluate the precision of a measurement?

• By comparing the value of two or more repeated measurements

• By comparing the value of the measurement to the expected value

• By comparing the value of the measurement to the average value

• By comparing the value of the measurement to the estimated value

Which of the following best describes precision?

• Consistency of repeated measurements

• Closeness to the true value

• Closeness to the average value

• Closeness to the expected value