Review for T1Q2Biotech

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the actual value. It is calculated using the formula: Percent Error = |(Estimated Value - Actual Value)| / Actual Value x 100%.

Front

How do you convert a number to scientific notation?

Back

To convert a number to scientific notation, move the decimal point to create a number between 1 and 10, then multiply by 10 raised to the power of the number of places the decimal was moved.

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What are significant figures?

Back

Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How do you round a number to significant figures?

Back

To round a number to a specific number of significant figures, identify the digit at the last significant figure place, and round up if the next digit is 5 or greater.

Front

What is the significance of significant figures in calculations?

Back

Significant figures indicate the precision of measurements and calculations. The result of a calculation should reflect the least precise measurement used.

Front

Calculate the percent error if the estimated weight of an object is 50 grams and the actual weight is 60 grams.

Back

Percent Error = |(50 - 60)| / 60 x 100% = 16.67%.

Front

Convert 0.00045 to scientific notation.

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0.00045 in scientific notation is 4.5 x 10^-4.

Front

Round 123.456 to four significant figures.

Back

123.5.

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How many significant figures are in the number 100.0?

Back

There are four significant figures in 100.0.

Front

What is the result of (3.00)(2.0) with the correct number of significant figures?

Back

The result is 6.0.