Understanding Precision and Accuracy in Chemistry

What is the role of significant figures in measurements?

• They are used to calculate the average of measurements.

• They indicate the precision of a measurement.

• They determine the unit of measurement.

• They help in converting units.

How is accuracy defined in a scientific context?

• It is the ability to measure without errors.

• It is the number of significant figures in a measurement.

• It is the consistency of repeated measurements.

• It is the closeness of a measurement to the accepted value.

What does precision refer to in scientific measurements?

• The consistency of repeated measurements.

• The closeness of a measurement to the accepted value.

• The accuracy of a single measurement.

• The number of significant figures in a measurement.

In the context of shooting arrows, what does it mean if the arrows are close together but not near the bullseye?

• The shots are neither accurate nor precise.

• The shots are both accurate and precise.

• The shots are precise but not accurate.

• The shots are accurate but not precise.

If a set of measurements is close to each other but far from the accepted value, how would you describe it?

• Both accurate and precise.

• Neither accurate nor precise.

• Precise but not accurate.

• Accurate but not precise.