Accuracy in Measurement: A Study of Density

These flashcards cover key concepts from the lecture on measuring accuracy and density in a laboratory setting.

The measure of how close experimental data is to theoretical values is known as __.

Accuracy

The formula for calculating percent error is __.

|theoretical value-experimental value| / theoretical value x 100

In laboratory experiments, the __ of the glassware can affect the accuracy of measurements.

Ability to measure volume

Density is defined as divided by .

mass; volume

To measure the density of a solid object through a liquid, the technique used is __.

Water displacement

The theoretical density of water at 4 degrees Celsius is __ g/mL.

1.00

When using a digital balance, always ensure that the scale reads __ before measuring any items.

Zero

The quantitative results are often visualized using a __ to depict data relationships.

Scatterplot

The __ value represents how well the data fits a linear regression model.

R²

In a linear regression equation in the form of y=mx+b, the 'm' represents __.

Slope of the line

Calculating the density requires dividing the by the .

mass; volume

In the lab, to ensure accuracy, a __ is recommended to hold items being measured.

Weigh boat

Percent error gives a measure of accuracy in a lab report, typically expressed as a __ value.

Positive