Measurements

Front

What is the measurement using the correct number of sig. figs.?

Back

88.90cm

Front

Every measurement must end with ______________

Back

an uncertain digit

Front

The statement "this solution has a green color" is an example of a _______________________observation.

Back

qualitative

Front

The digits you can read directly off of a measuring device are called ______________ digits.

Back

certain

Front

How close a measurement is to the true value for the quantity is called ______________.

Back

accuracy

Front

What is the difference between accuracy and precision?

Back

Accuracy refers to how close a measurement is to the true value, while precision refers to how consistent repeated measurements are.

Front

What is a significant figure?

Back

A significant figure is any non-zero digit, any zeros between significant digits, and any trailing zeros in the decimal portion.

Front

What is the purpose of using significant figures in measurements?

Back

To convey the precision of a measurement and to avoid implying greater accuracy than the measurement allows.

Front

What is a quantitative observation?

Back

An observation that involves a number or measurement.

Front

What is a qualitative observation?

Back

An observation that describes qualities or characteristics without using numbers.