Math in Chemistry

Front

What is scientific notation?

Back

A way of expressing numbers that are too large or too small to be conveniently written in decimal form, using powers of ten.

Front

How do you convert a number into scientific notation?

Back

Move the decimal point in the number until only one non-zero digit remains to the left of the decimal point, then multiply by 10 raised to the number of places the decimal was moved.

Front

Convert 0.0005 into scientific notation.

Back

5 x 10^-4

Front

Convert 950,000 into scientific notation.

Back

9.5 x 10^5

Front

Convert 10.068 into scientific notation.

Back

1.0068 x 10^1

Front

How would you write -5.6 x 10^-3 in standard form?

Back

-0.0056

Front

What are significant figures?

Back

Digits in a number that contribute to its precision, including all non-zero digits, zeros between significant digits, and trailing zeros in the decimal portion.

Front

How many significant figures are in the number 1,001?

Back

4

Front

How do you determine the number of significant figures in a measurement?

Back

Count all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal part.

Front

What is the standard form of a number?

Back

A way of writing numbers using digits, without exponents or scientific notation.