Chemistry Qt1 Review

Front

What is scientific notation?

Back

A method of expressing numbers as a product of a coefficient and a power of 10, e.g., 7.82 x 10^-6.

Front

What does a negative exponent in scientific notation indicate?

Back

It indicates that the number is very small.

Front

Is the equation 2H2 + O2 → 2H2O balanced?

Back

No, it is not balanced.

Front

Convert 12,000,000 to scientific notation.

Back

1.2 x 10^7

Front

How many significant figures are in the number 100.00210?

Back

8 significant figures.

Front

How many grams are in 1 kilogram?

Back

1,000 grams.

Front

What is the purpose of significant figures in measurements?

Back

To indicate the precision of a measurement.

Front

What is the scientific notation for 0.00045?

Back

4.5 x 10^-4

Front

How do you convert from scientific notation to standard form?

Back

Move the decimal point to the right for positive exponents and to the left for negative exponents.

Front

What is the value of 10^3?

Back

1,000.