Chemistry Lab Skills Assessment

Front

What is an independent variable in an experiment?

Back

The factor that is intentionally changed by the scientist to observe its effect on the dependent variable.

Front

How should data be collected in an experiment testing salt concentration on boiling point?

Back

Record the boiling point for each salt concentration and plot a graph of boiling point vs. salt concentration.

Front

What is the best method for collecting data during an experiment?

Back

Recording observations in a lab notebook.

Front

What is the main advantage of using a pipette over a beaker?

Back

Pipettes allow for more precise measurement of liquids.

Front

What laboratory equipment is used to heat substances?

Back

Bunsen burner.

Front

What is a dependent variable?

Back

The factor that is measured in an experiment to see how it is affected by the independent variable.

Front

What is a control variable?

Back

A factor that is kept constant throughout an experiment to ensure that the results are valid.

Front

Why is it important to record observations during an experiment?

Back

To ensure accurate data collection and to allow for reproducibility of the experiment.

Front

What is the purpose of a graph in scientific experiments?

Back

To visually represent data, making it easier to identify trends and relationships.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics or qualities, while quantitative data involves numerical measurements.